Examining the Relationship between COVID-19 Related Job Stress and Employees’ Turnover Intention with the Moderating Role of Perceived Organizational Support: Evidence from SMEs in China

The outbreak of COVID-19 has exerted an enormous impact on society, enterprises, and individuals. It has affected the work attitudes and psychology of employees to a certain extent and their job stress (JS) has also augmented accordingly, leading to increased turnover intention (TI). With the survey responses of 720 employees of small and medium enterprises (SMEs) in China as the sample, we studied the impact of COVID-19 related JS and TI with the moderating effect of perceived organizational support (POS). We utilized linear and multiple regression analysis using Windows SPSS 25. The research findings indicated that the JS caused by COVID-19 in the first affected region (Hubei) was significantly stronger than that in other regions (non-Hubei). JS had a significant positive relationship with employees’ TI, while POS had a significant negative connection with employees’ TI. We also identified that POS weakened the positive association between JS and employees’ TI. These findings are expected to be conducive to and conductive for the upcoming theoretical and empirical investigations as the founding guidelines, as well as for managers in formulating effective policies to curb JS, which would ultimately be helpful in reducing TI.


Introduction
At the beginning of 2020, the rise of a sudden pandemic posed a huge threat to the lives and health of people around the world and brought about significant losses to the global economy [1,2]. As an important force in improving people's livelihoods, expanding employment, and promoting innovation, small and medium enterprises (SMEs) have contributed nearly 80% of jobs, 70% of innovation, 60% of GDP and 50% of tax revenue in China [3]. However, due to their small scale and limited capability against sudden strikes, such as the impact of the coronavirus 2019 disease (COVID- 19), their weak anti-risk ability results in a higher employee turnover rate, thereby making the already struggling production and operation even worse [4].
Without any doubt, the outbreak of COVID-19 has sharply increased the job stress (JS) of employees, which in turn has affected employee turnover intention (TI) [5][6][7][8][9]. The notion of JS as a key research topic in management fields, such as management psychology and organizational behavior, originated in the 1970s [10]. Numerous studies have found that JS can cause significant problems, such as job dissatisfaction, burnout, etc., which ultimately produce a higher turnover rate [11]. On the other hand, He et al. (2020) believe RO2: What is the impact of COVID-19 related job stress on employee turnover intention among the employees of Chinese SMEs?
RQ3: Can perceived organizational support moderate the relationship between job stress and turnover intention?
The first research question focused on whether there is any significant difference in COVID-19 related JS between the first affected region (Hubei Province) and other regions of China (non-Hubei areas). In order to make a comparison, we selected 42.22% of respondents from Hubei Province and the other 57.77% from non-Hubei regions. The second question aimed to find out whether there is a significant relationship between COVID-19 related JS and TI among the employees of Chinese SMEs. Finally, the third research question explored whether POS can moderate the relationship between JS and TI among the employees of Chinese SMEs.

COVID-19 and Job Stress (JS)
JS refers to a series of physiological and behavioral reaction processes felt by individuals, which are produced by coercive and threatening factors that are in turn caused by work behaviors within the work environment and under the interaction between the individuals and their work environments [26]. Cooper et al. (1988) put forward the stress system model and occupational stress indicator (OSI) in 1988 and pointed out that the amount of JS is mainly affected by factors including the work itself, the role of the individual within the organization, career development obligation, interpersonal relationships at work, and organizational structure [27]. Based on the previous results, Mattenson and Ivancevich (1987) believed that work stress can be divided into internal stress and external stress, emphasizing the influence of individual differences and individual perceptions on JS [28]. Cavanaugh et al. (2000) posited that JS is related to job safety requirements, such as role conflict, role ambiguity, and job insecurity [29].
According to a recent study conducted by Wang et al. (2020), the sudden pandemic that started at the beginning of 2020 has made Chinese employees nervous, particularly during the early days of the pandemic, which has created a specific kind of mental stress [30]. Jaime et al. (2020) found that the occurrence of COVID-19 has made medical staff feel anxious and stressed [31]. Wang et al. (2020) discovered that although current COVID-19 levels have been alleviated, the demotions, pay decreases and work related anxiety of SME employees that have been caused by COVID-19 and the corresponding difficulties in corporate development still exist, which are likely to continue to cause worry and panic as well as an increase in JS, leading to voluntary resignations from jobs [30]. A survey conducted on the impact of COVID-19 on Chinese SMEs by Dai et al. (2020) during the early periods of the pandemic revealed that 20 percent of the surveyed firms were unable to survive beyond a month on a cash flow basis and 64 percent were not able to survive beyond three months, which presents a dire picture of SMEs bankruptcies under the extended pandemic scenario [32]. Another contemporary study conducted by Sun et al. (2021) has revealed that COVID-19 has significantly affected the mental health, productivity, and performance of Chinese SMEs employees [33].
Survey-based research that was conducted by Tsinghua University on 995 SMEs in February 2020 indicated a decrease of more than 50% in income among 30% of the companies surveyed; another 28% companies reported a 20 to 50% drop. However, in Hubei Province, the scenario was much worse with 55% of SMEs reporting that they had shut down their business due to the quarantines and cash flow problems. Most of the financial pressure (i.e., 62.8%) derived from paying employee insurance, salaries, and social security, whilst rent and loan payments were the second and third largest causes of stress [34].
Although we have factual data on the financial impact of COVID-19 on Chinese SMEs, there is still a dearth of studies investigating the impact of COVID-19 and JS on the employees of Chinese SMEs. Furthermore, we found that no studies so far in academia have compared the impact of perceived COVID-19 related employee JS in the first affected region (Hubei Province) to that in other parts of China. On the basis of previous studies, this empirical paper uses four indicators to measure JS: work intensity, working conditions, interpersonal relationships, and career development. In China, COVID-19 first broke out in Wuhan, Hubei, and then became a pandemic. Individual employees in regions with different severities of the pandemic have experienced very different levels of stress and corresponding responses. Therefore, we proposed the following hypothesis to be tested: Hypothesis 1. Job stress caused by COVID-19 in the first affected region (Hubei) is significantly different from that in other regions (non-Hubei).

Job Stress (JS) and Turnover Intention (TI)
JS, the perceived psychological state of an employee, who feels that they are in an abnormal mental condition, feels anxious, and/or sometimes suffers from burnout [35]. In relevant research, Mazerolle and Maahs (2000) found that excessive JS may cause a series of abnormal reactions and discomforts in employee physiology, psychology, and behavior, which ultimately make employees tend to produce negative emotions, such as anger and depression [36]. In other research conducted on the TI of front-line employees in SMEs that are involved in logistics enterprises, Jie and Fu (2019) identified that workload, working hours, monotonous repetition, interpersonal consumption, and work-family conflict all have a significant positive impact on the TI of employees [37]. Furthermore, Zhang et al. (2015) studied the role of emotional responses to JS on TI, and found that JS has a significant positive predictive effect on TI [38]. On the other hand, however, a recent study conducted by Kim et al. (2020) revealed that JS does not positively affect the TI of the teachers in secondary schools [39].
The large-scale outbreak of COVID-19 has exerted a huge economic impact on SMEs. As a result of the current state of employment affairs, the JS of employees has increased. The outbreak of COVID-19 has made the unstable performance of SMEs more prominent and has sharply increased the JS of the employees, which in turn has caused them to reconsider their future career plans, leading to TI. A very recent study conducted by Al-Mansour (2021) on Saudi healthcare workers revealed that JS caused by the outbreak of COVID-19 has a significant impact on the TI of front-line Saudi healthcare workers who were considering to change their jobs within the next few months [40]. Wang et al. (2020) reported that the current COVID-19 situation has severely affected Chinese SMEs through demotions, pay decreases, and work related anxiety that has ultimately led to employees' voluntarily resigning from their jobs [30]. Although there is sufficient literature evidence focusing on the relationship between JS and TI, the COVID-19 outbreak and subsequent lockdowns have placed us in a novel circumstance in which such stress can be a significant predictor of TI for employees, particularly SMEs employees as they were the first affected sector of the economy. Moreover, we made the first attempt to empirically identify COVID-19 related JS as a predictor of TI, which is rare not only among Chinese scholars but also within the entire organizational behavior domain. Evidently, however, the number of studies focusing on the impact of COVID-19 related JS on the TI of Chinese SMEs is comparatively lower than that of necessity and therefore, we aimed to test the following hypothesis: Hypothesis 2. COVID-19 related JS has a significant positive relationship with employee TI.

Perceived Organizational Support (POS) and Job Stress (JS)
POS indicates the general belief of employees that their organization respects and values their contributions and is concerned about their welfare [41]. Rhoades and Eisenberger (2002) posited that reductions in employees' POS may result from the stress that they usually experience within their role [42]. According to George et al. (1993), POS decreases negative physiological and psychological reactions that are caused by JS because employees receive material and emotional support from their organization when coping with high job demands [43]. Empirical studies have also shown that POS negatively relates to burnout [44,45]. According to Rhodes and Eisenberger (2002), four mechanisms proposed by organizational support theory [46] underlie the indirect relationships of three categories of treatments received by employees from their organization: fairness, supervisor support, rewards, and job conditions. They found that these mechanisms lead to POS outcomes, such as increased job satisfaction, positive mood, reduced strain, increased affective commitment, superior performance, and reduced turnover [42].
Due to the long-term emergency situation created by COVID-19 and following job related stress that has been burdened on SMEs employees, we suggest that we need to identify the causes of job stress. Employees consider that many stressors (such as work overload, role ambiguity, and role conflict) could be restricted by their organization, thus reducing employees' JS through effective POS. A number of previous studies have revealed that POS has a mediating role on the association of stress with anger and depression symptoms [47] and with TI [48,49], which has provided the initial evidence that POS may mediate the relationship between JS and TI.

Perceived Organizational Support (POS) and Turnover Intention (TI)
Eisenberger et al. (1986) put forward perceived organizational theory on the basis of social exchange theory and organizational anthropomorphism, with POS as the core concept of the theory [46]. Organizational support theory emphasizes that the organization's care and attention toward employees is an important reason for employees to stay in the organization and make contributions to the organization. The proposal of this theory overcame the limitations of previous studies, which emphasized the commitment of employees to their organization but rarely paid attention to an organization's commitment to its employees [50].
POS can act as a reducer of TI during any distress that falls on an organization and its employees [14,41]. It may be the only remedy that could cure the internal and external stress related anxiety of an individual employee. In a situation such as the COVID-19 outbreak, such support is required to keep talented and competent employees and retain the sources of competitive advantage [41]. Therefore, we believe that there is scope to work on the relationship between POS, JS, and TI in emergency situations, such as the recent COVID-19 outbreak, which are yet less explored among academics, managers, and policymakers alike. He et al. (2016) found that organizational support can increase employees' job adaptability and job involvement, thereby reducing TI [51]. Rhoades and Eisenberger (2002) performed a meta-analysis of more than 70 studies on organizational support and concluded that organizational support increases the organizational affective commitment of employees, increases employee job satisfaction and reduces TI [42]. Cropanzano et al.'s (1997) research also proved that there is a positive correlation between organizational support and TI [45]. In a recent investigation conducted on workers in public sports facilities in South Korea, Choi and Noh (2021) found that POS can moderate the relationship between organizational factors, such as JS and TI [14]. They recommended that although COVID-19 has created a high job instability environment, such job instability and JS environments can be minimized through consideration and support for the service workers of the organization, consequently reducing the TI. Based on the literature evidence, we assumed that POS has a negative relationship with TI for the employees of Chinese SMEs. Hypothesis 3. POS has a significant negative relationship with employees' TI.

COVID-19 Related Job Stress (JS), Perceived Organizational Support (POS) and Turnover Intention (TI)
POS is the degree to which an individual perceives help and support is offered by their organization. When facing the same stressful situation, employees with higher POS have a higher belief in success than employees with low POS, thereby reducing JS and overcoming the various discomforts caused by stressors [52]. Meyer and Smith (2000) found that POS can affect employee TI through the mediating effect of organizational commitment [53]. Liu et al. (2019) posited that factors affecting job satisfaction, such as rewards, organizational management, and occupation satisfaction can reduce the positive association between JS and TI for rural health workers as a means of POS [54]. As well as in the domain of POS research, social support has also been investigated to observe the moderating effect of POS on the association between JS and TI. For example, Fong et al. (2018) found that social support weakens JS effects on TI [55].
Meng et al. (2020) explored another dimension of POS and found that organizational justice partially moderates the predictive effect of work values on TI [13]. These studies have shown that POS has a buffering effect on JS and TI. Therefore, this existing literature provides clues indicating that as POS increases, the effects of JS on TI decrease. During the COVID-19 outbreak, an investigation conducted by Choi and Noh (2021) on the employees of South Korean public sports facilities revealed that POS moderates the relationship between characteristic job factors, such as JS and TI [14], which provides the underpinning basis for this study. Based on the literature evidence, we assumed that POS has a negative relationship with TI for the employees of Chinese SMEs. However, in the tense atmosphere of COVID-19, we believe that more and more empirical investigations should be conducted on the mediating and moderating role of POS in different regions to underpin this domain of academia. Therefore, POS as moderator role, we proposed the following hypothesis to be tested: Hypothesis 4. POS weakens the positive relationship between JS and TI.

Theoretical Framework
In this empirical study, we considered a single independent variable, JS, a single dependent variable, TI, and a single moderating variable, POS. The proposed theoretical framework is presented in Figure 1.

Hypothesis 3:
POS has a significant negative relationship with employees' TI.

COVID-19 Related Job Stress (JS), Perceived Organizational Support (POS) and Turnover Intention (TI)
POS is the degree to which an individual perceives help and support is offered by their organization. When facing the same stressful situation, employees with higher POS have a higher belief in success than employees with low POS, thereby reducing JS and overcoming the various discomforts caused by stressors [52]. Meyer and Smith (2000) found that POS can affect employee TI through the mediating effect of organizational commitment [53]. Liu et al. (2019) posited that factors affecting job satisfaction, such as rewards, organizational management, and occupation satisfaction can reduce the positive association between JS and TI for rural health workers as a means of POS [54]. As well as in the domain of POS research, social support has also been investigated to observe the moderating effect of POS on the association between JS and TI. For example, Fong et al. (2018) found that social support weakens JS effects on TI [55].
Meng et al. (2020) explored another dimension of POS and found that organizational justice partially moderates the predictive effect of work values on TI [13]. These studies have shown that POS has a buffering effect on JS and TI. Therefore, this existing literature provides clues indicating that as POS increases, the effects of JS on TI decrease. During the COVID-19 outbreak, an investigation conducted by Choi and Noh (2021) on the employees of South Korean public sports facilities revealed that POS moderates the relationship between characteristic job factors, such as JS and TI [14], which provides the underpinning basis for this study. Based on the literature evidence, we assumed that POS has a negative relationship with TI for the employees of Chinese SMEs. However, in the tense atmosphere of COVID-19, we believe that more and more empirical investigations should be conducted on the mediating and moderating role of POS in different regions to underpin this domain of academia. Therefore, POS as moderator role, we proposed the following hypothesis to be tested: Hypothesis 4: POS weakens the positive relationship between JS and TI.

Theoretical Framework
In this empirical study, we considered a single independent variable, JS, a single dependent variable, TI, and a single moderating variable, POS. The proposed theoretical framework is presented in Figure 1.

Sampling Area
We collected primary data in China, 10 months after the outbreak of COVID-19 was first detected. The sample covered employees from the region of Hubei Province, where the pandemic was primarily discovered, as well as respondents who were selected from the provinces of Zhejiang, Henan, Hunan, Sichuan and Guangdong, where the pandemic was relatively severe. We principally targeted the employees of SMEs in those provinces as the sample respondents.

Measurement Tool
As an element of the measurement tool, we used a structured survey questionnaire (presented as Appendix A) to collect data from the respondents utilizing a 7-point Likert scale, where 1 indicated "strongly disagree" and 7 indicated "strongly agree". The survey instrument had 12 items covering 3 variables (see Appendix A), which were selected from the existing literature. Furthermore, we conducted a confirmatory factor analysis (CFA) to confirm the convergent and discriminant validity among the studied variables and the overall fitness of the measurement model. All of the variables and items were found to be reliable and had sufficient factor loadings and Cronbach alpha values (see Table 2). Due to the geographic distance between the respondents and COVID-19 prevention policies, we sent an electronic version questionnaire via e-mail after they had agreed to participate in the study. The respondents were informed extensively about the concise and wellstructured survey items in order to avoid any confusion or complexities in filling out the questionnaires. Further, they were free to contact us at the time of filling out the questionnaire if they perceived any doubt regarding the survey items. After completing the questionnaire and sending it back to us, we provided them with a small token as a gift. This gift token was purposively used to encourage them to fill out the questionnaire properly and accurately. The respondents were strongly assured that the questionnaires would only be used for this research purpose and that their personal identities would be kept confidential. All of these efforts and techniques were purposively used to reduce the non-response rate, which eventually helped us to control the non-response bias [56,57] of our final results.

Sampling Technique and Sample Size
We adopted the purposive sampling technique to select the respondents since this study had a specific purpose to serve. Purposive sampling is suitable when researchers are required to collect a particular type of preferred data from a particular group of people, either since they are the only people who can supply such desired information or they conform to certain criteria set by the researchers [58]. This sampling technique is convenient when researchers use the sample to conform to specific criteria [59]. Therefore, we used purposive sampling to collect data from those respondents who could provide us with sufficient information regarding JS, POS, and TI. Thus, the respondents were selected purposively if they were working for different Chinese SMEs in the selected provinces. This selection of potential respondents was the most suitable for providing relevant and accurate scores for JS, POS, and TI, rather than large numbers of non-relevant respondents who were willing to respond but had a less rationale for the questionnaires, and could eventually prevent biasing by 80-100% [57].
Before the formal survey, we conducted a pre-survey on a small number of respondents to evaluate the rationality and wording of the questionnaire design so as to revise it ahead of time. We initially selected 1000 respondents from the pre-selected Chinese SMEs. However, we received 790 completed questionnaires from them (a response rate of 79%); however, 70 of those were found to be incomplete or incorrectly filled out and were therefore discarded from our consideration. Finally, we considered 720 survey questionnaires (n = 720) as the valid sample size. The non-response rate (21%) was not due to people not being willing to respond to this research, but rather because they were busy in managing some critical issues related to the pandemic as well as other issues, such as quarantines, internet facilities, unable to work on certain days, etc. Thus, non-response bias [56] was not an issue for our sample or results.

Demographic Information
Following Table 1 highlights demographic information about the respondents that we considered as valid samples. According to Table 1, the majority of the respondents (40.55%) belonged to the age group of 18-25 years, followed by the age group of 26-35 years (30%). The percentages of male and female respondents were close. Most of the respondents (44.58%) had job experience of 11-20 years. We purposively selected near equal portions of respondents from Hubei and non-Hubei regions in order to compare the JS levels. Additionally, we found that more than half (54.17%) of the respondents were unmarried and a major portion (55.69%) of them had a bachelor's degree.

Reliability and Validity Test
The scales used in this paper originated from the measurement scales used in other Chinese and foreign literature. However, in order to ensure the accuracy and reliability of the scales, we conducted a reliability analysis using Cronbach alpha values for each variable. The results of the reliability and validity test using Windows SPSS, Version 25.0 (IBM, Armonk, NY, USA) and Amos, Version 25.0 (IBM, Armonk, NY, USA) are outlined in Table 2. According to our analysis, the lowest factor loading for the items was 0.610, which is supported by Hair et al. (1998) and Field (2000), who recommend a factor loading of 0.50 for each item to be considered as the threshold for retaining items in order to ensure greater confidence [60,61]. On the other hand, the lowest Cronbach alpha value was 0.659, which was well above the recommended limit (0.60) suggested by Nunnally and Berstein (1994). Therefore, all of the items passed the reliability test [62].
A confirmatory factor analysis (CFA) was carried out to examine the model fitness indices and found that all of the indices were within the acceptable range (Table 3)  Convergent and discriminant validity was confirmed through testing and comparing the standard measurements reported by the CFA, such as composite reliability (CR), average variance extracted (AVE), maximum shared variance (MSV), and average shared variance (ASV) [71]. Based on the results from Table 2, CR > 0.7, AVE > 0.5 and CR > AVE were satisfied for each construct. Thus, the convergent validity was confirmed for this study. Discriminant validity was also confirmed because AVE > MSV and AVE > ASV were both satisfied for this study.
A further method for determining discriminant validity was carried out using the heterotrait-monotrait ratio (HTMT), which is generally displayed and tested through the matrix of multi-trait and multi-method. The reported HTMT results, shown in Table 4, depict that all of the maximum values of HTMT were 0.703, which is within the accepted threshold value of 0.85 [72]. Hence, discriminant validity was also further confirmed through the HTMT testing approach.

Correlation Analysis
Previous studies have shown that the different backgrounds of the respondents, such as gender, educational level, working experience and marital status, affect the turnover rate of employees [73]. Topel and Ward (1992) found that there is a negative relationship between job experience and turnover rate [74]. This study treated those individual employee characteristics as control variables. The correlation matrix, mean, and standard deviation of the variables are presented in Table 5.   Table 5 shows that marital status (r = −0.263, p < 0.01) and work experience (r = −0.352, p < 0.01) present a significant negative correlation with employee TI, while gender (r = 0.445, p < 0.01) and educational background (r = 0.608, p < 0.01) present a significant positive correlation with employee TI. JS had a significant positive correlation (r = 0.656, p < 0.01) with TI. A similar relationship was identified between POS and TI. The hypotheses were initially supported by the correlation analysis.

Tests of Hypotheses
The sample was divided into Hubei and non-Hubei groups according to region. On the premise that the sample conformed to an approximately normal distribution, the independent sample t-test method was adopted. The results for the descriptive statistics and the Levene's test are depicted in Tables 6 and 7, respectively.  The sample size of non-Hubei regions was 416, with a mean value of 3.06, and the sample size of Hubei was 304, with a mean value of 4.14. Primarily, employees' JS was different in the different regions. The Sig value corresponding to the F value was less than 0.05, indicating that the variance of the two groups was heterogeneous and that there was a difference. The Sig value corresponding to the t-test was 0, indicating that there was a significant difference in JS levels between the two groups, thereby supporting hypothesis 1. The above results indicate that employees' JS in severely affected regions was higher than that in other regions. This demonstrates that the COVID-19 pandemic generally increased employees' JS and that they adopted action strategies to seek change.
Finally, we conducted a multiple regression analysis to identify the internal relationship between the variables (control, independent, moderator, and dependent). Table 8 presents the multiple regression analysis between the variables. The regression analysis results in the above table indicate that the goodness of fit between the data and the model was satisfactory. We further reported the collinearity statistics following the multiple regression analysis to check whether there were multicollinearity issues. Multicollinearity only matters in the presence of an acute relationship between two or more independent variables and thus, dramatically affects the reliability of the multiple regression model because of the inflation in standard errors. It can be tested through two kinds of collinearity statistics: the variance of inflation factor (VIF) and tolerance, which is the inverse of the VIF (i.e., 1/VIF). Through the range of VIF or the tolerance, multicollinearity issues can be identified and corrected. For example, when the range of VIF is from 0 to 5 or tolerance less than 0.2, it is treated as weak multicollinearity; when the range of VIF is 5 to 10 or the tolerance is 0.2 to 0.1, it is treated as moderate multicollinearity; when the range exceeds previous two ranges, it is treated as strong multicollinearity [61]. From Table 8, it can be observed that our reported VIF values were between 1.254 and 2.38 and the tolerance was between 0.798 and 0.430, which indicates that the multiple regression outputs were not biased through collinearity issues.
According to the results of the multiple regression analysis, JS had a significant positive relationship (model 2, β = 0.80, p < 0.001) with the dependent variable, TI, thereby supporting the second hypothesis. On the other hand, POS had a significant negative relationship (model 3, β = −0.33, p < 0.001) with TI, which supports our third hypothesis.
The results from the hierarchical regression analysis revealed that the interaction between JS and POS had a significant declining effect on employee TI (model 4, β= −0.14, p < 0.01). Figure 2 displays the theoretical framework along with the hypotheses testing results. Moreover, from the interaction effects displayed in Figure 3, it is also clear that POS reduced the intensity of the impact of JS on TI. This indicates that the higher the POS, the weaker the positive relationship between JS and TI. Therefore, our fourth proposed hypothesis (POS weakens the positive relationship between JS and TI) is also supported by the above-mentioned analytical evidence. weaker the positive relationship between JS and TI. Therefore, our fourth proposed hypothesis (POS weakens the positive relationship between JS and TI) is also supported by the above-mentioned analytical evidence.

Discussion of Findings
Our analyses revealed that COVID-19 related JS was higher in the first affected region (Hubei Province) than in other provinces. This outcome is quite common, as we learned from the existing literature [26][27][28][29] that has argued such internal and external factors, such as pandemics, political crises, and other natural or artificial disasters, influence the safety and security of job performance due to role ambiguity and perceived insecurity. Many studies have been conducted recently on the role of the COVID-19 pandemic in JS [30][31][32][33][34], which have also produced similar findings. weaker the positive relationship between JS and TI. Therefore, our fourth proposed hypothesis (POS weakens the positive relationship between JS and TI) is also supported by the above-mentioned analytical evidence.

Discussion of Findings
Our analyses revealed that COVID-19 related JS was higher in the first affected region (Hubei Province) than in other provinces. This outcome is quite common, as we learned from the existing literature [26][27][28][29] that has argued such internal and external factors, such as pandemics, political crises, and other natural or artificial disasters, influence the safety and security of job performance due to role ambiguity and perceived insecurity. Many studies have been conducted recently on the role of the COVID-19 pandemic in JS [30][31][32][33][34], which have also produced similar findings.

Discussion of Findings
Our analyses revealed that COVID-19 related JS was higher in the first affected region (Hubei Province) than in other provinces. This outcome is quite common, as we learned from the existing literature [26][27][28][29] that has argued such internal and external factors, such as pandemics, political crises, and other natural or artificial disasters, influence the safety and security of job performance due to role ambiguity and perceived insecurity. Many studies have been conducted recently on the role of the COVID-19 pandemic in JS [30][31][32][33][34], which have also produced similar findings.
This study found that JS has a significant positive relationship with employee TI, which is also supported by a number of behavior and human resource management scholars, such as [30,[36][37][38][39][40], who have reported that the recent pandemic has created excessive JS, leading to a series of abnormal reactions and discomforts in the physiology, psychology, and behavior of SMEs employees and ultimately leading to them leaving their jobs. It is noteworthy and interesting to mention that most of these studies were conducted from the Chinese perspective, as the highly concerning country of the pandemic along with big population and fast rising of economy. We also found that POS has a significant negative relationship with employee TI, which is also duly supported by a number of Chinese and foreign scholars [14,42,45,46,50,51], who have mostly reported that, based on their empirical findings, proper organizational support from the company and managers reduces tension and internal burnout with positive direction, thus decreasing the chances of employees wanting to leave the organization.
Finally, from our robust and rigorous statistical analyses, we identified that POS weakens the positive relationship between JS and TI. This finding is also somewhat consistent with [14,[52][53][54]. Those authors believe that POS can positively reduce TI, as well as weaken the relationship between the JS and TI of general employees. Therefore, our findings are mostly consistent with previously reported results, revalidate this study's proposed hypotheses within the context of Chinese SMEs and answer all of the research questions that were presented earlier in this paper.

Theoretical Implication
The current study indicates that JS has been higher in the areas that were severely affected by COVID-19 than that in other areas. It further revealed that JS has a strong positive relationship with employee TI, while POS has a significant negative correlation with TI. Finally, it also identified that POS weakens the positive relationship between employee JS and TI.
The examined results of this study can guide upcoming theoretical and empirical investigations focusing on JS, POS, and TI from the pandemic perspective. It has been generally recognized by scientists that the pandemic and its aftermath are not going to end very soon. Although the studies focusing on JS and TI are abundant, investigations focusing on these factors from the perspective of emergency situations, such as pandemics or war, are quite rare in academia. Therefore, the academic domain requires more studies that emphasize the relationship between pandemics (such as the COVID-19 outbreak and subsequent lockdowns) and work-based psychological wellbeing (i.e., job related stress and TI of employees). We strongly believe that future studies can obtain useful aid from our study and also consider its limitations as a study gap.

Practical Implication
This study revealed that pandemic related work pressure can be a source of JS among employees, which could lead to voluntary turnover behavior. Stress found among employees during an emergency period, which has become a major concern for modern psychological scholars as it can deteriorate both employee mental health and job performance. This study has practical implications in reducing JS and TI.
The managers and organizational policymakers can try to reduce the sources of employees' JS in order to ultimately reduce TI during short-and long-term emergency situations (i.e., the present COVID-19 situation). In this regard, organizational support as perceived by the employees can largely heal perceived stress and reduce TI. Many previous studies have identified that only support from the organization and top-level managers could effectively augment employees' morale and confidence in such circumstances. Therefore, we strongly believe that reductions in JS and, subsequently, TI can only be brought about by effective and emotional measures from top level management, who can communicate, guide, motivate, and implement those supportive measures in order to reduce JS and TI.

Limitations and Further Scope
This study has some obvious limitations that should be recognized as study gaps. First of all, this study only examined SMEs, ignoring larger enterprises. Moreover, we could not incorporate a lot of employees into the study sample because they had already left their jobs. This was unavoidable in a situation where there was a limit on the number of employees to be surveyed, but if follow-up studies are carried out in the future, such limitations can be eradicated. Furthermore, a sample size of 720 may not be adequate as China is a very large country. However, during the pandemic, it was very difficult to select the right respondents and collect data from them due to the severe restrictions that were imposed. We propose future researchers to consider a higher sample size for upcoming research investigations.
Second, this study was conducted within the context of COVID-19 and although it was possible to reflect the impact of job instability experienced by SME employees, it was not possible for us to compare the results to the commercial situation. Employment opportunities in Chinese SMEs have increased due to the stabilization of the COVID-19 situation and as a result of the sufficient supply of vaccines. If an additional survey is conducted on the subject and a longitudinal study is conducted by integrating with the data of this study, more in-depth results will be obtained.
Finally, the study was conducted on a specific country (China) and specific organizations (SMEs). Therefore, the study perspective was restricted to a particular culture. However, future studies should be conducted on a cross-country basis to provide wider and more sophisticated results for academia. We also recommend that longitudinal studies be initiated by interested researchers on these issues and perspectives.

Conclusions and Recommendations
As a source of JS, the COVID-19 pandemic has played a detrimental role in the economy, particularly for SME employees in Hubei Province. JS in Chinese SMEs forces employees to think about leaving their organizations. According to our analytical findings, POS can reduce employees' intention to leave their jobs. Due to COVID-19, the job instability of workers in SMEs increased significantly and the perceived stress can eventually develop into the intention to change jobs. Proper and solid organizational support is essential for a sustainable working environment, not only in a pandemic but in any circumstance. However, in a pandemic situation such as the present COVID-19 outbreak, such support is more significant in retaining intellectual talents who can be the source of competitive advantage for organizations.
We recommend that top management should frequently communicate with their employees and reassure them that their job is secure and provide a normal pay scale and environment. Such intimate communication between the employees and top level management can bring a sense of confidence among the employees regarding their concerns. Furthermore, we advise managers and policymakers not to increase workloads or cut pay in such emergencies because they can create dissatisfaction and internal burnout among the employees. The employees who leave their organizations are less likely to come back after the emergency period is over. Thus, it is better to retain existing talented employees than hire new ones and investing money into those new employees as training and development costs.
At the end of this study, we can conclude that if the management observes signs of JS among their employees and if such stress is affecting their behavior, it should be controlled and reduced effectively through motivating and supportive organizational policies and measures. Such support can be provided in a number of ways, such as effective communication, proper counseling, incorporating the suggestions put forward by employees, aligning the goals of employees with the overall organizational goals, and caring about the wellbeing of employees. Human Resource department and personnel must implement supportive commitments so that the ideals of the enterprise and the deeds of its employees are congruent in order to ensure a consistent flow of trained and satisfied workers in the future.
The present study emphasizes that organizational policymakers should take on a major role in identifying the sources of pandemic related JS and TI for employees. Being a source of competitive advantage, employees can repay the support of psychological and managerial contributions once the pandemic is over. The payback could be the higher loyalty of the employees toward the organization, thereby contributing to superior creativity and innovation efforts. Since more natural and artificial emergencies may occur in the future, organizations must devise and implement policies that can counter psychological pressures on their employees. Thus, the findings of this study can form initial guidelines for academics as well as managers. Future researchers should consider the research gaps and more empirical and theoretical studies should be conducted that could remove negativities among employees.
COVID-19 is a worldwide emergency that is affecting the physical, psychological, and economical status of almost all countries. Therefore, it is only us who can remove the immediate and enduring effects of this disaster through our well-guided plans and effective implementation policies. In this situation, organizational support can be the core remedy to stabilizing organizational order as well as retaining the sources of competitive advantages. Funding: There are no sources of funding to report.
Institutional Review Board Statement: Ethical review and approval were waived for this research because of the use of survey responses from the employees of SMEs in China, which is subject to social science-based research and not relevant to any human/clinical trial. POS3: My organization did not terminate any employees during the pandemic.

Conflicts of
POS4: I am satisfied with the support my organization provided me during the pandemic.