A Structural Equation Modelling Evaluation of Antecedents and Interconnections of Call Centre Agents’ Intention to Quit †

: Call centers play a signiﬁcant role in the operational dynamics of different types of busi-nesses. This is especially the case because a call center agent’s demeanor can impair or engender customer satisfaction, which has ramiﬁcations for business patronage. Unfortunately, the pressures associated with the role of the call center agent have made staff attrition a norm in the industry. While this does not augur well for the call center or the organizations that they serve, the role of possible antecedents in the equation of staff attrition in South African call centers remains largely unexplored. Using a structural equation modeling approach, this study examined the interconnections between customer orientation, knowledge management, job satisfaction, and employees’ intention to quit. Additionally, the mediating inﬂuence of job satisfaction on the association between customer orientation and knowledge management of the intention to quit is examined. This study found signiﬁcant relationships between knowledge management, customer orientation, and job satisfaction and the dependent variable (intention to quit). In addition, this study establishes that the extent to which job satisfaction may mediate the inﬂuence on the intention to quit hinges on the organizational element considered. Two factors limit the extent to which the ﬁndings from this study can be generalized. First, this study focused on the call center setting in South Africa. Second, convenience sampling was used in this study. This study points to critical operational practices that call center managers can embrace toward enhancing job satisfaction and reducing intention to quit propensity. Using structural equation analysis, we contend that call centers in the South African setting would effectively address staff attrition if appropriate organizational practices are endorsed toward ensuring employee job satisfaction.


Introduction
Call centers have become the norm for organizations wishing to remain in close contact with their customers. Interestingly, while call centers ought to offer competitive intelligence to firms, they have to contend with high levels of absenteeism and staff attrition, as is often the case with call centers in South Africa (Poon and Dyantyi 2004;Dhanpat et al. 2018;Zurnamer 2019). Research has distilled the dual consequences of high employee turnover for organizations: unrecouped financial investments (Bilau et al. 2015; paper, the findings are presented and discussed. To conclude, the theoretical as well as managerial implications are explained, and directions for future research are pinpointed.

Theoretical Foundation and Statement of Hypotheses
Behavior theory has been a major reference point for understanding what people do and the underlying stimuli (e.g., Gbadamosi 2016;Belk 2013;. According to that psychological viewpoint, how individuals process their decisions, such as entrepreneurial (e.g., Hagos et al. 2019), consumption (e.g., Opute 2017Gbadamosi 2016), or employee quitor-stay decisions (e.g., Cooper-Thomas et al. 2012;Kammeyer-Mueller et al. 2005), hinges on the attributes that critically shape their mindsets. Situated in the latter theoretical domain, this study seeks to understand the intention to quit in the call center setting. Several factors can be attributed to employees' intention to quit, and these include individual, organizational, and environmental factors, among others (Chan et al. 2017;Dhar 2015;Chen et al. 2016;Nawaz and Pangil 2016). The associated losses of actual employee exit and the extended ramifications that they might have for organizational performance and customer satisfaction in the case of call centers can be profound. Hence, Yue et al. (2019) emphasized the pertinence for organizations to invest in interventions that could reverse an employee's intention to quit.
Undoubtedly, several factors explain an employee's intention to quit, and identifying the range of relevant factors for a specific context is essential toward seeking ways of effectively motivating employee retention. For instance, it is documented that career growth opportunities significantly impact turnover intentions (Nawaz and Pangil 2016). Furthermore, extant literature reveals that turnover intentions could be lowered through mentoring the staff (Lapointe and Vandenberghe 2017) and investing in corporate sponsorships (e.g., Dhar 2015). Instructively, Chen et al. (2016) declared that job satisfaction is a veritable antidote for turnover intentions. The topic of employee intention to quit is of major importance, and this study seeks to contribute to the discourse from the purview of call centers in South Africa, a geographical context and organizational unit that may differ from those reflected in the existing literature. Drawing upon strategic marketing (e.g., Opute and Madichie 2017) and HRM (e.g., Opute 2014; Chughtai and Buckley 2011) foundations, this study follows prior precedence (e.g., McNally 2007; Abdullateef et al. 2014;Aliyu and Nyadzayo 2016) and conceptualized a framework that incorporates customer orientation, knowledge management, and job satisfaction.

Intention to Quit
Intention to quit, defined as the employee's plan to look for alternative work as they are no longer satisfied with the current work environment (Abdullateef et al. 2014), has long been a major area of research in the management and organizational behavior field (Walsh and Bartikowski 2013;Pradhan et al. 2019). Since the intention to quit precedes an employee's resignation, the ability to identify the probable cause of the agent's intention to quit could enable an organization to convince an employee to stay. Several antecedents could contribute to the decision of an employee to voluntarily quit an organization (Pradhan et al. 2019), but a predominant factor is job dissatisfaction (Aliyu and Nyadzayo 2016).
Agent turnover in call centers is increasingly alarming. Illustrating the severity of this problem, Mwendwa and Gitonga (2017) suggested that an average of three people could fill the same call center position in a single year, and as a result, organizations incur significant financial losses. Molino et al. (2016) identified plausible turnover attributes, including exhaustion, burnout, and increased stress levels. These indicators are troubling, taking into consideration that the job of an agent often requires them to keep good countenance and maintain a friendly attitude even while responding to angry and unfriendly clients.
Another factor that contributes to an employee's intention to quit is the lack of challenging work (e.g., Stock 2016). Employees may become dissatisfied in their jobs because they undertake routine tasks that do not challenge them. This may be pronounced in the case of call center agents who, in addition to having repetitive and structured tasks, lack decision autonomy (Strandberg and Dalin 2010). This is likely to cause boredom or burnout and ultimately job dissatisfaction. The ultimate outcome of such a development is embracing the escape option: the intention to quit. The likely reason for that outcome is that when dissatisfaction kicks in (Aliyu and Nyadzayo 2016), the intention to quit intensifies (Abdullateef et al. 2014).
To stimulate positive employee moods, call centers should train and develop agents to manage stress (Chicu et al. 2016). Notably though, an agent's ability to deal with workrelated challenges varies from agent to agent (Stock 2016). Therefore, increasing employee autonomy and providing necessary job resources (such as knowledge management skills) can improve their ability to handle challenges and drive job satisfaction (Stock 2016). Furthermore, teamwork and the adoption of positive human resource practices can be utilized to enhance the psychological well-being of employees (Opute 2014) and negate employee's intention to quit (Chicu et al. 2016).

Customer Orientation
The criticality of customer orientation to identifying, meeting, and exceeding customers' expectations, as well as propelling customer loyalty and driving organizational profitability, has been reiterated in the literature (e.g., Pandey and Charoensukmongkol 2019;Narver and Slater 1990;Park et al. 2018;Stock 2016;Dean 2007;Abdullateef et al. 2014;Opute 2020a;Kennedy and Laczniak 2016). Indeed, emerging market insights underline customer orientation as a critical factor of competitive advantage (e.g., Contractor 2013; Izogo 2016) while noting that customer orientation enables effective crosscultural selling (Pandey and Charoensukmongkol 2019). For corporate success, customer orientation should be the guiding vision for driving operational decisions (Kennedy and Laczniak 2016). Emphasizing this importance from the entrepreneurial orientation perspective, Opute (2020b) stressed the relevance of effectively designing and sustaining strategic marketing, which is a customer-oriented approach that fosters a better understanding of customers and their concerns so that behaviors that may endanger customer relationships can be avoided (e.g., Lussier and Hartmann 2017;Mullins et al. 2014;Lussier and Hall 2018).
Given the intangibility of services and high customer interaction and socialization, customer orientation is critical for economic success (Hennig-Thurau 2004;Opute 2020a). Reinforcing this criticality, scholars remind us that the role played by service employees shapes service quality (Opute 2020a;Dabholkar et al. 2000). Contributing to the discourse on customer orientation, Aliyu and Nyadzayo (2016) not only reminded us that the relationship with the customer needs to be managed, but also denoted that customer orientation has to do with two factors, namely enjoyment and needs. Transposed to the call center, an agent should derive enjoyment in satisfying customers' needs. Furthermore, the agent should believe in his or her ability to identify and meet customers' needs (McNally 2007). Therefore, customer orientation is an important aspect of the culture in call centers (McNally 2007), and a lack of it may make the job arduous and possibly activate an employee's intention to quit. Within the services setting, the discourse on customer orientation identifies four dimensions for measuring the construct (Donavan et al. 2004;Gazzoli et al. 2013): (1) the need to pamper the customer, (2) the need to read the customer's needs, (3) the need for a personal relationship, and (4) the need to deliver the service required.
For call center agents, two types of customer needs must be satisfied: expressed and latent. Expressed needs are explicit, while latent needs are implicit, and the challenge that the agent faces is to leverage customer orientation skills for identifying the latent needs (Blocker et al. 2011). Abdullateef et al. (2014) enhanced that view and contended that call center agents who endorse this customer orientation of an organization would effectively identify customer needs and resolve them in a satisfactory manner. Indeed, the principles of customer orientation are anchored in the role of an agent and the customer.
Exploring customer orientation in a call center setting, McNally (2007) found that it has a positive association with job performance as well as job satisfaction. The job satisfaction contention is reinforced by further research (e.g., Babakus et al. 2011;Aliyu and Nyadzayo 2016). For example, Aliyu and Nyadzayo (2016) suggested a positive correlation between customer orientation and job satisfaction, while Babakus et al. (2011) found not only a positive association between job satisfaction and organizational commitment, but also a negative association with the intention to quit. The latter contention resonates with the position of Abdullateef et al. (2014) that there is a strong negative relationship between the organization's customer orientation and an employee's intention to quit. If the agent does not derive enjoyment from meeting customer expectations or believe in their ability to meet those needs, the agent's intention to quit may be induced, as the agent may opt for alternative options that he or she perceives to be satisfying. Grounded on these arguments, this study hypothesizes that in the call center setting in South Africa: Hypothesis 1 (H1). There is a positive relationship between an employee's customer orientation and job satisfaction.

Hypothesis 2 (H2).
There is a negative relationship between an employee's customer orientation and the intention to quit.

Knowledge Management
The importance of knowledge management in the organizational setting has been lauded since the 1990s (e.g., Sadeghi and Rad 2018;Politis 2001;Kianto et al. 2016). For two reasons, a continued focus on knowledge management in organizations is rational: (1) knowledge management is essential for organizations to attain and sustain competitive advantage (e.g., Abdullateef et al. 2014;Zheng et al. 2010;Kianto et al. 2016), and (2) the efficiency of knowledge management varies from one organization to the other (Sadeghi and Rad 2018;Kianto et al. 2016). Knowledge management is essential for organizational innovation and learning (Garrido-Moreno et al. 2010), and understanding how knowledge is created and utilized is vital for organizational sustainability. Knowledge includes the justified beliefs, expertise, and experiences held within an organization (Bolisani and Bratianu 2018).
According to Aliyu and Nyadzayo (2016), knowledge management encompasses an organization's ability to create, store, manage, use, and share knowledge for organizational efficiency and effectiveness. Similarly, Donate and de Pablo (2015, p. 362) referred to Alavi and Leidner (2001) as well as Zack et al.'s (2009) definition of knowledge management as "a set of activities, initiatives, and strategies that companies use to generate, store, transfer, and apply knowledge for the improvement of organizational performance". In a more recent contribution, Sadeghi and Rad (2018) conceptualized knowledge management as involving an organization's ability to leverage acquired knowledge to achieve competitiveness. Organizations must learn and adapt to survive and grow in a continuously changing competitive landscape (Bhaskar and Mishra 2017). Consequently, to effectively adapt to changes in the business environment and stay competitive, call centers need to generate and harness knowledge. Endorsing such a knowledge management approach, organizations can effectively acquire, integrate, share, and apply knowledge in building competitive advantage (Garrido-Moreno et al. 2010). Donate and de Pablo (2015) delineated four core aspects of knowledge management: (1) knowledge creation, which involves replacing old knowledge with new knowledge or finding new competitive ways of doing business; (2) knowledge storage, which implies preserving knowledge for future use whenever needed; (3) knowledge transfer, which entails the intra-or interorganizational sharing of knowledge; and (4) knowledge application, which relates to utilizing knowledge in the most efficient and beneficial way to aid organizational functioning. For their part, Kianto et al. (2016) conceptualized five knowledge management facets: knowledge acquisition, knowledge sharing, knowledge creation, knowledge codification, and knowledge retention.
The discourse on knowledge management alludes to how knowledge management would facilitate organizational effectiveness. To compete effectively, organizations must ensure customer satisfaction. We argue that effectively satisfying the customers in the call center setting hinges on their ability to manage knowledge. Unsurprisingly, Khodakarami and Chan (2014) contend that call center agents should have profound knowledge of the information to be shared with customers during calls. When agents have the know-how and access to knowledge relevant to solving customers' problems, it is likely to improve their job satisfaction. That notion is supported by Kianto et al. (2016), who investigated Finnish municipal organizations and found a significant positive correlation between knowledge management and job satisfaction. Elaborating their findings, they note that knowledge sharing plays a fundamental role in promoting employee job satisfaction, however differentiated by job characteristics. Furthermore, they noted that knowledge sharing does not only facilitate employee job satisfaction, but it also improves employee well-being. Insight from Malaysian call centers (Aliyu and Nyadzayo 2016) reinforces and extends Kianto et al. (2016): effective knowledge management would lead to an increase in agent job satisfaction and reduction in intention to quit. A plausible rationale for these outcomes is that knowledge management facilitates an organization's ability to create better work methods that could bolster employee morale and therefore drive job satisfaction. It is against this background that this study hypothesizes that:

Hypothesis 3 (H3).
There is a positive relationship between knowledge management and job satisfaction.

Hypothesis 4 (H4).
There is a negative relationship between knowledge management and the intention to quit.

Job Satisfaction
Job satisfaction is considered a relative concept. Basically, one can be satisfied with one's job because of certain factors, whereas in a different organization, those factors may not be influential. Customer centrism is essential for organizational marketability, but that cannot be achieved without ensuring employee job satisfaction (Molino et al. 2016). McNally (2007) as well as Babakus et al. (2011) posit that there should be a balance between customer centrism and ensuring employee well-being. If agents find their work to be non-intrinsically and extrinsically rewarding, it can affect their efficiency and effectiveness in completing tasks. Job satisfaction is linked to the employees' emotions, feelings, and attitudes toward the work, other employees, remuneration, and culture of an organization (Abdullateef et al. 2014;Sims et al. 2016). These insights extend the literature, which lauds the importance of job satisfaction to organizational commitment and employee retention (Donavan et al. 2004). Enhancing these theoretical contentions, job dissatisfaction has been documented to exert a detrimental effect on customer service quality and advertently affect organizational success (Mwendwa and Gitonga 2017;Iwu and Ukpere 2013).
According to Abdullateef et al. (2014), job satisfaction is when an agent (employee) holds favorable emotions and attitudes toward the job. Supporting that foundation, Sims et al. (2016) not only portrayed job satisfaction as concomitant with employee satisfaction, but also attributed that outcome to the existence of a conducive organizational climate. Extending the organizational climate and outcome substance, Strandberg and Dalin (2010) not only lamented the inflexibility of call center employees and the monotonous, structured, and highly stress-laden nature of their tasks, but also underlined the impact of low staff morale as well as the intention to quit. The monotonous substance of call center agents' tasks was echoed by Mwendwa and Gitonga (2017). Sometimes, standards are set for agents and, if they fall short and fail to manage their work stress, it might lead to employee burnout, absenteeism, or an increase in their intention to quit the job (Chicu et al. 2016;Pradhan et al. (2019). It is possible that employees that experience work stressors would be dissatisfied, and dissatisfied employees would be more predisposed towards quitting their jobs and search for new jobs. This argument synchronizes with the finding of Feyerabend et al. (2018) that job satisfaction has a negative correlation with the intention to quit. This finding was corroborated by Walsh and Bartikowski (2013), who also noted a negative correlation between job satisfaction and the intention to quit. Drawing from the above discourse, this study contends that in the specific context of call centers in South Africa: Hypothesis 5 (H5). There is a negative relationship between job satisfaction and intention to quit.
Hypothesis 6 (H6). Job satisfaction positively mediates the relationship between customer orientation and intention to quit.
In addition, based on the analogy in Section 2.3, the following is also hypothesized: Hypothesis 7 (H7). Job satisfaction positively mediates the relationship between knowledge management and intention to quit. Figure 1 captures the conceptual framework for this study and includes seven hypotheses grounded in the core debates in the literature on customer orientation, knowledge management, job satisfaction, and intention to quit. J. Risk Financial Manag. 2021, 14, x FOR PEER REVIEW 7 of 22 for agents and, if they fall short and fail to manage their work stress, it might lead to employee burnout, absenteeism, or an increase in their intention to quit the job (Chicu et al. 2016;Pradhan et al. (2019). It is possible that employees that experience work stressors would be dissatisfied, and dissatisfied employees would be more predisposed towards quitting their jobs and search for new jobs. This argument synchronizes with the finding of Feyerabend et al. (2018) that job satisfaction has a negative correlation with the intention to quit. This finding was corroborated by Walsh and Bartikowski (2013), who also noted a negative correlation between job satisfaction and the intention to quit. Drawing from the above discourse, this study contends that in the specific context of call centers in South Africa: Hypothesis 5 (H5). There is a negative relationship between job satisfaction and intention to quit.
Hypothesis 6 (H6). Job satisfaction positively mediates the relationship between customer orientation and intention to quit.
In addition, based on the analogy in Section 2.3, the following is also hypothesized: Hypothesis 7 (H7). Job satisfaction positively mediates the relationship between knowledge management and intention to quit. Figure 1 captures the conceptual framework for this study and includes seven hypotheses grounded in the core debates in the literature on customer orientation, knowledge management, job satisfaction, and intention to quit. The conceptual model for this study is grounded in social exchange theory (SET), which portrays factors such as employee job satisfaction as a mediator in the relationships that are key to attrition rates in organizations (Witt and Wilson 1990). The relevance of social exchange theory in exploring the call center industry, especially from the point of relationships between key performance indications and their impacts on employee performance and commitment to the organization, has been documented in the literature (Molm et al. 2000;Abdullateef et al. 2014). Further literature on call centers and service The conceptual model for this study is grounded in social exchange theory (SET), which portrays factors such as employee job satisfaction as a mediator in the relationships that are key to attrition rates in organizations (Witt and Wilson 1990). The relevance of social exchange theory in exploring the call center industry, especially from the point of relationships between key performance indications and their impacts on employee performance and commitment to the organization, has been documented in the literature (Molm et al. 2000;Abdullateef et al. 2014). Further literature on call centers and service marketing reinforce this relevance in evaluating the relationships between employees, the immediate supervisors, and the organizational policies (Aliyu and Nyadzayo 2016). Thus, the organization's ability to effectively define each employee's responsibilities is a component of SET in perceived organizational support for the employees (Lynch et al. 1999). Leveraging on the SET, Ertürk and Vurgun (2015) agree that perceived organizational support will inversely influence employees' intentions to quit.

Sample and Survey Instrument
South Africa, which has been categorized as an emerging market (Morgan Stanley Capital International (MSCI); Central Intelligence Agency 2019), was the geographical setting of this study. Typical characteristics of emerging markets include a low per capita income, high volatility (driven by three factors: natural disasters, external price shocks, and domestic policy instability), volatile currency swings, and high risk-induced potential for growth (Morgan Stanley Capital International (MSCI)). Thriving in such a challenging economic setting requires a strategic operational approach that drives performance enhancement. This is in line with the operational foundation that this study leans on to examine employees' intentions to quit in the South African call center setting.
Quantitatively based, a questionnaire was used in this study to collect data from call center agents. Given that the population of call center agents is sizable, the directory of the professional body of call center agents in South Africa was utilized in determining the sample for this study. Convenience sampling (e.g., Saunders et al. 2012) was used in identifying the participants in this study. The hallmark of any reputable study is the adherence to ethical guidelines (Leedy and Ormrod 2014), and as such, before data was collected, ethics approval was sought from the researcher's university. To obtain ethical clearance, we needed to be granted permission from the participating firm. In requesting permission, it was necessary to state that all data would be used anonymously, thereby assuring respondents privacy and confidentiality. We also indicated that participants were free to withdraw from the study at any time, but more importantly, they were at liberty to not answer any question they felt uncomfortable with. Hair et al. (2019) counseled that adherence to ethical standards in research equally requires a clear explanation of the nature, aim, and importance of the study. From the directory of the professional body of call center agents, a call center was selected, and the questionnaire was emailed to the manager for distribution to employees. To explore the South African context, the research instrument was adapted from past validated call center studies. The two latent and the mediating and dependent variables were measured using a five-point Likert scale (1 = strongly disagree; 5 = strongly agree).
To identify potential problems in the questionnaire design, we followed the methodological benchmark of 5-10 (Bush 2012) and pilot-tested the survey instrument with 10 respondents (e.g., Opute and Madichie 2017). Justified by the pilot-testing evidence, the survey instrument was revised and contained nineteen (19) measures (see Table 1). The customer orientation construct was measured using five-items from past studies (Choi et al. 2014;Aliyu and Nyadzayo 2016), while the five measures for knowledge management had also been previously used in studies (e.g., Sin et al. 2005;Aliyu and Nyadzayo 2016). Similarly, to measure job satisfaction, this study adapted five measures validated in past studies (LeRouge et al. 2006;Aliyu and Nyadzayo 2016). Finally, following methodological precedence (Gianfranco 2011;Aliyu and Nyadzayo 2016), four items were used to measure the intention to quit construct.

Data Analysis
To ensure suitability of the data for relevant analysis for examining the conceptualized framework, two major steps were taken (Field 2009). First, preliminary data screening was undertaken. Second, analytical steps were taken to confirm the reliability and validity of the data. After this, inferential statistical tests were carried out.
Data screening and preliminary analyses were conducted, in which 224 questionnaires were returned. Following a preliminary analysis guide (see Byrne 2010;Kantsperger and Kunz 2005;Field 2009), five questionnaires were eliminated from the analysis due to missing values. Thus, the analytical sample for this study was 219. The sample for this study consisted of 152 females (67.86%) and 67 males (32.14%). The majority of the respondents (192, or 87.7%) were aged between 18 and 34 years. Adhering to Byrne (2010), the study utilized the Levene's test for equality of variance to check for response bias. The results from the comparison between the early and late respondents confirmed no response bias in this research.
Quantitatively examining the conceptual framework involved calculating the descriptive and regression estimates through structural equation modeling (SEM) analysis. Using SEM, we examined the influence of the independent and mediating variables on the dependent variables, with the aim of determining the extent to which the data was consistent with the hypothesized relationships in the model (e.g., Byrne 2010; Hu and Bentler 1999). To ensure suitability for examining the conceptualized relationships through SEM analysis, reliability and validity screening of the data was undertaken (Byrne 2010). Table 1 shows the reliability and validity estimates for customer orientation, knowledge management, employee job satisfaction, and intention to quit. The Cronbach's alpha estimates ranged from 0.68 to 0.82, statistical evidence that suggests internal consistency of the conceptualized factors (see Hair et al. 2010). At 0.68, the Cronbach's alpha for intention to quit measured favorably with the standard for confirming internal consistency in past studies (see, for example, Crossley et al. 2007;Chen and Tsai 2007;Leung and Lee 2006;Aliyu and Nyadzayo 2016), with all studies exploring one form of individual intention or the other. Reinforcing the validity for this internal consistency conclusion, despite a Cronbach's alpha value below 0.7, Miller (1995) contended that a lower internal consistency is expected for a more homogeneous sample. Methodologists warn that Cronbach's alpha may be inadequate for confirming internal consistency in a construct and therefore recommend the use of composite reliability to support Cronbach's alpha estimates (e.g., Jöreskog 1971). Adhering to that logic, we estimated the composite reliability (CR) for each factor, giving due consideration to the cut-off value of 0.60 (Nunnally and Bernstein 1994). The composite reliability results for this study were satisfactory for customer orientation (0.86), knowledge management (0.83), job satisfaction (0.87), and intention to quit (0.79).
Consistent with the structural equation modeling literature (e.g., Kantsperger and Kunz 2005;Yim et al. 2005), a two-step data analysis approach was used in this research. First, exploratory factor analysis (EFA) was undertaken to evaluate the measurement instruments. Subsequently, further validation of the instruments through a structural model (confirmatory factor analysis (CFA)) was undertaken. In the first stage, items that showed insufficient levels of the standard indicator reliability were deleted. Table 1 summarizes the measurement items that were considered in the structural model analyses. The factor loadings for each construct were reasonably high and compared well with prior research (e.g., Park et al. 2018;Aliyu and Nyadzayo 2016;Crossley et al. 2007). From the evidence in Table 1 above, the items for each factor were appropriate measures for the constructs at the 0.5 loading benchmark (e.g., Conway and Huffcutt 2003;Byrne 2010;Park et al. 2018;Chen and Tsai 2007). In this study, two items were loaded at the 0.4 level but retained as appropriate measures of their constructs (e.g., Field 2009;Crossley et al. 2007).
As stated earlier, the questionnaires for this study were e-mailed to the manager of a call center agent to distribute to respondents. In other words, this study had only one informant organization: a dispensation that created common method bias (Podsakoff et al. 2003). Consequently, to justify discriminant validity, it was important to carry out a common method variance (CMV) test (Podsakoff et al. 2003;Fornell and Larcker 1981). To check for CMV, we performed Harman's single factor test. All principal constructs were put into the factor analysis. According to Podsakoff et al. (2003), when the factor analysis captured only one factor or a single general factor accounting for most of the covariance, then CMV existed. In this study, neither one factor nor a single general factor accounted for a majority of the variance. There was no common method bias in this study; the first factor accounted for 30.21 percent, while the total variance explained was 73.45 percent.
The study's CFA model made up of four latent variables, and 24 measurement items were analyzed using AMOS v.24. The structural model results for this study demonstrated acceptable goodness of fit estimates (χ 2 = 59.73, χ 2 /df = 1.012, p < 0.449, CFI = 0.99, GFI = 0.96, RFI = 0.912, NFI = 0.93, RMSEA = 0.08). Based on the recommended structural model thresholds (Hair et al. 2010), the statistical results achieved in this study were significant (See Table 2). Based on the results, the constructs for this study demonstrated acceptable validity levels and measured the conceptualized constructs.
To consolidate the goodness of fit evidence for this study and further ensure suitability for regression investigation of the conceptualized hypotheses, discriminant analysis was performed to confirm the distinctness of the constructs. To establish discriminant validity, we followed the methodological guideline (Fornell and Larcker 1981) by estimating the average variance extracted (AVE). Tables 3 and 4 confirm the acceptable level of discrimination, with the achieved estimates measuring favorably with the benchmark (Fornell and Larcker 1981). Ranging from 0.565 to 0.730 (see Table 4), the ratio for all the four latent variables were above the suggested threshold (≥0.50) (Fornell and Larcker 1981). These statistical results lend support to the overall validity of the constructs used in measuring both the exogenous variables (customer orientation and knowledge management) and endogenous variables (job satisfaction and intention to quit).
As shown in Figure 1, while H1, H2, H3, H4 and H5 capture direct relationships, H6 and H7 capture mediating relationships. Structural model estimation was undertaken to test the relationships between the independent variables (customer orientation and knowledge management), mediating variable (job satisfaction) and dependent variable (intention to quit). Figure 2 and Table 5 summarize the structural model results for the direct relationships (H1, H2, H3, H4, and H5).  According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.     According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.   According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.   According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.   According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.   According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6. According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6. According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6. According to Byrne (2010), structural equation modeling is the most powerful approach to quantitatively test the mediating effects of the combined relationships between multiple independent and dependent variables in a single fit regression model. In line with the conceptualized framework (Figure 1), the mediating influence of job satisfaction was gauged, and the results are summarized in Table 6.

Findings
For the conceptualized direct relationships, statistical support was found for H2, H3, and H4. At β = −0.763 (p = 0.072), H2 was supported; there was a negative relationship between customer orientation (CO) and the intention to quit (IQ) at a significance level of 0.10. Thus, higher customer orientation would lead to a lower intention to quit. The conclusion of support for H2 was rationalized on the logic that due to the magnitude effect of the sample size, a conclusion based on a 10% significance level was valid (Richard 1986). Reinforcing that validity, Wasserstein and Lazar (2016) underlined that despite smaller p-values, statistical results could still be scientifically meaningful when an advanced analytical tool like AMOS is used to establish satisfactory fit indices, and this was the case in this study. For the second conceptualized relationship involving customer orientation, statistical significance was not found. At β = −0.349 (p = 0.358), customer orientation had a negative and statistically insignificant relationship with employee job satisfaction. Thus, H1 was not supported, a finding that contrasted with the prior literature, which suggested a positive association of customer orientation with employee job satisfaction (e.g., Babakus et al. 2011;Aliyu and Nyadzayo 2016).
Regarding knowledge management, support was found (H3) but also negated (H4) from the point of direct relationship. At β = 1.331 (p = 0.003), this study demonstrated a positive and statistically significant association of knowledge management with employee job satisfaction. Thus, H3 was supported, a finding that resonated with the trend in Malaysian call centers (Aliyu and Nyadzayo 2016) and Finnish organizations (Kianto et al. 2016). Statistically (β = 0.970 and p = 0.073), H4 was rejected; no significant negative association was found between knowledge management and the intention to quit. To the contrary, considering a significance level of 0.10, this study seemed to suggest that there may be a positive association between knowledge management and the intention to quit. An examination of the direct relationship between job satisfaction and intention to quit, as hypothesized in H5, captured values of β = −0.480 and p = 0.000. This statistical evidence indicates that job satisfaction had a significant negative relationship with the intention to quit. Based on that statistical result, H5 was supported .
Besides the direct relationships between study constructs, it was hypothesized that job satisfaction would mediate the relationships that the independent variables of customer satisfaction and knowledge management had with the dependent variable of the intention to quit. For the mediating variables, the R-square value of 0.344 indicates that 34% of the variance in job satisfaction was collectively explained by customer orientation and knowledge management. The remaining 66% would be determined by other variables that were not conceptualized in this model. The R-square value of 0.107 indicates the combined strength of the relationships between the customer orientation, knowledge management, job satisfaction and intention to quit. This goodness of fit measure indicates that 11% of the variance in the intention to quit was explained by customer orientation, knowledge management, and job satisfaction. The remaining 89% could be explained by other variables that were not conceptualized in this model.
The statistical results showed that in the studied population of call center agents, job satisfaction fully mediated the effect of customer orientation on employees' intentions to quit. The plausibility of full mediation was premised on the evidence that the direct effect estimate of −0.339 was lower than the indirect effect estimates of 0.074. Based on that evidence, H6 was statistically supported. From the point of possible mediation of job satisfaction in the relationship between knowledge management and the intention to quit, the statistical results reflected 0.397 and −0.261 for the direct effect estimate and the indirect effect estimate, respectively. Given that the indirect effect estimate in this case was less than the direct effect estimate, this implies that the conceptualized hypothesis of a mediating influence of job satisfaction on the relationship between knowledge management and the intention to quit was not valid, and thus, H6 was not supported.

Discussion
Situated in the internal marketing viewpoint (e.g., Choi and Joung 2017;Kotler and Armstrong 2012), this study examined the extent to which employee job satisfaction and intention to quit were imparted by customer orientation and knowledge management in the call center setting. This study contributes to the understanding of the internal marketing approach from the point of employee retention, an outcome that is critical for organizations to profitably satisfy customers (Choi and Joung 2017;Kotler and Armstrong 2012). This study aimed specifically to illuminate the aforementioned relationships to improve the understanding of call center attrition in an emerging economy (South Africa). Empirically, this study suggests that ensuring employee job satisfaction is an effective tool for mitigating the employee intention to quit (e.g., Pradhan et al. 2019;Walsh and Bartikowski 2013). In other words, when employees are satisfied with their jobs, they will be motivated to stay in their jobs and the firms they work for. Further empirical insights from this study illuminate the associated organizational components from the point of direct association to job satisfaction and the intention to quit, as well as the mediating capacity of job satisfaction in the association between organizational components and the intention to quit. Thus, the findings from this study contribute to the understanding of the network of relationships that explain employee intention to quit behavior (e.g., Aliyu and Nyadzayo 2016;Park et al. 2018;Abdullateef et al. 2014;Aladwan et al. 2013;Pradhan et al. 2019).
For ensuring employee job satisfaction to motivate employees to remain with their organizations, employees' responsibilities must be clearly defined and understood, in addition to tasks being structured in a manner that is fascinating and satisfying. These insights reinforce the organizational socialization literature which not only underlined the importance of job satisfaction toward achieving employee retention (e.g., Walsh and Bartikowski 2013;Aliyu and Nyadzayo 2016), but also the significance of role clarity in driving employee job satisfaction (e.g., Cooper-Thomas et al. 2012;Aliyu and Nyadzayo 2016;Kammeyer-Mueller et al. 2005).
A core take from this study is the centrality of employee job satisfaction to employee retention at β = −0.480 (p = 0.000). Equally underlined in this study is the network of relationships that aid the understanding of employees quit or stay decisions. While customer orientation does not influence job satisfaction, which contrasts several works (e.g., Park et al. 2018;Aliyu and Nyadzayo 2016;Babakus et al. 2011) but supports Auh et al. (2016), higher customer orientation would contribute to a lower intention to quit (e.g., Park et al. 2018;Aliyu and Nyadzayo 2016). Interestingly, a significant positive mediating influence of job satisfaction on the relationship between customer orientation and the intention to quit was found in this study. These results imply that while the customer orientation practices of the call center explored in this study may lead to a lower intention to quit, the practices are ineffective at driving employee job satisfaction. As a result, enforcing the customer orientation practices as a way of driving employee job satisfaction may lead to a high intention to quit. This insight may be suggesting that if there is an intensified push to enable employee satisfaction through customer orientation, this would increase employee stress (e.g., Auh et al. 2016) and by extension aggravate the intention to quit.
Within the population for this study, knowledge management would enhance employee job satisfaction, statistical evidence that contrasts Aliyu and Nyadzayo (2016) but supports Sin et al. (2005). In other words, if call centers enforce knowledge management practices, such as employees responding swiftly to customers' service needs, accurate sharing of customers' information across all contact points, appropriate data mining, and effective knowledge sharing to leverage customer information value, they would enhance employee job satisfaction. The rationale in that outcome is that since the organization gives due attention to mining data, shares knowledge and information accurately, and thereby enables employees to effectively respond to customers' needs, this will motivate employees to be satisfied with their jobs. Interestingly however, contrary to expectation, this study suggests that knowledge management may correlate positively with the intention to quit. Though at a very low significance level (p = 0.10), this study indicates that the more knowledge management is enforced, the higher the intention to quit propensity. Even more interesting is the evidence that job satisfaction does not mediate the relationship between knowledge management and intention to quit. According to Wong (2005), the efficacy of knowledge management practices hinges on the operational issues and various other factors such as leadership, structure, culture, roles and responsibilities, IT equipment and measurement. Bearing that foundation in mind, we conclude that the association between knowledge management and the intention to quit and the mediating impact of job satisfaction in the explored call center may be explained by factors not captured in this study.

Managerial Implications
For organizations aiming for market orientation and corporate success, internal marketing is a core strategy (Choi and Joung 2017). Recognizing that satisfying internal customers (i.e., employees) would enable organizations to provide external customers a higher quality of service (e.g., Choi and Joung 2017; Kotler and Armstrong 2012), employee intention to quit was examined in this study. Understanding employee intention to quit dynamics is of central importance to organizations (e.g., Aliyu and Nyadzayo 2016;Park et al. 2018;Aladwan et al. 2013) because of the increasing challenge of retaining their employees (e.g., Ibrahim and Al Falasi 2014; Suliman and Obaidli 2011) despite the high cost of recruiting new employees (e.g., Ashforth et al. 2007;Ibrahim and Al Falasi 2014). This study offers insights that would enable call centers in the explored context to effectively address the employee retention challenge. Given the fundamental role that call centers play in the service landscape in South Africa, practitioners within settings that are homogeneous in features can leverage the insights from this study to strategically structure their efforts toward galvanizing job satisfaction and driving employee retention. If they effectively manage the internal marketing dynamics, organizations will not only recoup their recruitment and training investments in the employees, but also, over time, compete more effectively in the market (Choi and Joung 2017;Kotler and Armstrong 2012).
To maximize the employee retention benefits of job satisfaction, managers in the explored population must ensure suitable measures of other internal organizational factors that may aid these outcomes, either directly or through a mediating influence. In that regard, managers in the explored call center setting must bear in mind that, although a customer orientation focus would contribute to a lower intention to quit, it may not aid job satisfaction. On the contrary, a blind enforcement of customer orientation may impact employee job satisfaction negatively. Although no significant positive relationship was found between customer orientation and employee job satisfaction, call center practitioners are reminded that job satisfaction significantly mediates the relationship between customer orientation and the intention to quit.
The attention of call center practitioners is also drawn to the notion of a likely relationship between knowledge management, employee job satisfaction and employee intention-to-quit. Contrary to hypothesis, this study found no mediating influence of job satisfaction on the relationship between knowledge management and employee intentionto-quit. Analysing that evidence in tandem with the insight that employee intention-to-quit propensity may be aggravated by knowledge management, though at a low significance level (p = 0.10), managers in the explored call-centre domain are reminded of the need for a precautionary approach in the adoption of knowledge management.
To effectively respond to the employee retention challenge, call center managers should continuously promote and maintain good relationships between their employees and customers. Constant and continuous updates of customer information is key to proper knowledge management and a customer-oriented approach that will lead to employee and customer satisfaction. The findings from this study provide the required scientific evidence to support the aforementioned practical implications. This study provides insights of theoretical and practical relevance for a customer-oriented approach that drives job satisfaction and employee retention. Therefore, call centers can reap the positive benefits of long-term relationships and reduced costs of operations from creating the required customer-centric environment. This will encourage employees to engage customers in a productive and profitable manner.
This study suggests relevant operational alternatives to call centers whose current concerns include cost reduction and loss of intellectual property due to employee turnover. This study offers call center managers relevant options for achieving employee job satisfaction and a reduction in job turnover without resorting to expensive strategies like salary increases. Taking a relational intrinsic perspective that considers the typical dynamics in the African context, this study challenges managers in the explored call center setting to also consider training programs and activities that enhance employee empowerment in the drive to achieve a lower intention to quit. Drawing on organizational socialization theory, it is imperative to note the importance of adopting a learning orientation (e.g., Cooper-Thomas et al. 2014;Cooper-Thomas et al. 2012), as well as the significant role that insiders (e.g., supervisors) (e.g., Wanberg 2012; Feldman 2012) play in driving employee job satisfaction and employee commitment to the organization. Managers in this call center setting must assume responsibility and endorse appropriate initiatives for mitigating employee turnover intention. Additionally, call center managers must create a work environment that leverages the inherent benefits of knowledge management to achieve the desired job satisfaction and long-term relationships.

Limitations and Directions for Future Research
This study contributes to the customer relationship management and service marketing literature from the call center perspective. It examined the relationships between customer orientation, knowledge management, employee job satisfaction, and the intention to quit, and as a result, it also contributes to the internal marketing literature (e.g., Choi and Joung 2017;Kotler and Armstrong 2012).
Despite its contributions, this study has a few limitations. First, the convenience sampling approach was used in this study, and therefore, the extent to which the findings can be generalized across the call center population is limited. While this study focused on the two main independent variables of customer orientation and knowledge management, there is no denying the fact that a plethora of other factors exist that could be possible precursors of an employee's intention to quit, and these could be explored in future studies within the context of call centers. The finding that job satisfaction plays a mediating role in the relationship between customer orientation and intention-to-quit but not between knowledge management and intention-to-quit is surprising. Future research should aim to shed more light on the mediating influence of job satisfaction while using a larger sample of respondents. Future research could also validate the findings from this current study through quantitative or qualitative studies, or a combination of both. Unlike this current study, prior research found a positive association between customer orientation and employee job satisfaction in the New Zealand (e.g., Babakus et al. 2011) and Malaysia (e.g., Aliyu and Nyadzayo 2016). To validate this current study, as well as improve the overall knowledge in this theoretical domain, more illumination of that association is necessary.
To expand knowledge in this area, future research that takes a comparative approach from the point of service types, marketing types, and geographical contexts is also necessary. Regarding the geographical context, there is a wide range of options that can be considered in future research. Core comparative settings may include Western versus non-Western, developed, frontier and emerging markets, Islamic, and non-Islamic cultural settings. This study focused on the South African context, a setting that may not completely share the same cultural and market features with other African countries. Therefore, future research could also seek to explore the antecedents of employees' intention to quit in other African countries.
In pursing the aforementioned research directions, future research should incorporate processes that address the convenience sampling limitation of this study. A single informant organization data collection approach was used in this study: questionnaires were e-mailed to a call center manager, who distributed the questionnaires to respondents in the call center. Contrary to the methodological literature, which suggests a common method bias threat in one-informant dispensation (e.g., Podsakoff et al. 2003), the statistical results found no common method bias in this study. However, a future research should aim to embrace a multiple call center informant approach.
Finally, contrary to conceptualization, this study found no support for the notion that knowledge management negatively associates with intention to quit. Instead, at a significance level of 0.10, it seems to suggest that there may be a positive association between knowledge management and intention to quit. Future research should take a closer look at this relationship and illuminate clearly under which conditions their association may be negative or positive. Data Availability Statement: Not applicable.

Conflicts of Interest:
The authors declare no conflict of interest.