Investigating the Serially Mediating Mechanisms of Organizational Ambidexterity and the Circular Economy in the Relationship between Ambidextrous Leadership and Sustainability Performance

: In this study, based on a resource-based view, we investigate the inﬂuence of ambidex-trous leadership (reﬂected in transformational and transactional leadership styles) on sustainability performance (reﬂected in economic, environmental, and social performance) through the serially mediating mechanisms of organizational ambidexterity (reﬂected in explorer and exploiter attributes) and the circular economy (reﬂected in ﬁelds of action). By applying structural equation modelling analyses to survey data collected from private and public Greek organizations, which operate in manufacturing, services, and trade sectors, under an externally dynamic environmental context, we found that (a) organizational ambidexterity and the circular economy ﬁelds of action positively mediate the relationship between ambidextrous leadership and sustainability performance and (b) the mechanism originating from transformational leadership has a higher impact on sustainability performance compared to the mechanism that originates from transactional leadership. Accordingly, this study addresses the aspect of the special issue that refers to modern approaches to management and leadership for sustainable business performance research and makes several theoretical and practical implications.


Introduction
Over the last decade, there has been an intensive investigation in theory and research on the adoption of circular economy practices by organizations in relation to their sustainability performance [1].Although there are many definitions of the circular economy (CE) that have been proposed [2,3], the most prominent definition, according to Geissdoerfer et al. [4], has been provided by the Ellen MacArthur Foundation [5] (p.7) and reads as follows: "Circular economy is an industrial system that is restorative or regenerative by intention and design.It replaces the 'end-of-life' concept with restoration, shifts towards the use of renewable energy, eliminates the use of toxic chemicals, which impair reuse, and aims for the elimination of waste through the superior design of materials, products, systems, and, within this, business models" [6] (p. 226).It is argued [7][8][9][10][11] that the circular economy, by involving the so-called 10 Rs for smarter product use and manufacturing (by Refusing, Rethinking, and Reducing), extending the lifespan of products and their parts (by Reusing, Repairing, Refurbishing, Remanufacturing, and Repurposing), and the useful application of materials (by Recycling and Recovering), will eventually alter the linear business model of taking, consuming, and disposing.
Although there is no clear and agreed definition of organizational sustainability performance in the literature, in this study, we state that an organization's sustainability performance different environmental features that prevail at the time of choice [28].In particular, it is argued that transformational leadership has been associated more strongly with dynamic external environments compared to transactional leadership, which has been connected more strongly to stable external environments [29].However, following the calls [17,28] for more research on how environmental features influence leadership styles, in this study, we try to contribute by investigating whether the environmental dynamism and competitiveness drive the balance between transformational and transactional leadership styles.
Specifically, Jansen et al. [22,29], argue that transformational leadership styles are associated with unstable environments and that transactional leadership styles are associated with stable environments.However, we argue that these associations between environmental factors and leadership styles are not mutually exclusive but, on the contrary, they may occur concurrently.This is because riskiness and stability may simultaneously exist in an external environment and feed each other [17].Accordingly, we hypothesize the following: Hypothesis 1 (H1).Environmental features are positively related to transformational leadership.

Hypothesis 2 (H2).
Environmental features are positively related to transactional leadership.

Ambidextrous Leadership and Organizational Ambidexterity
It is usually argued that the transformational leadership style is needed for exploration.The term exploration refers to the philosophy of the organization to focus on flexibility and innovation by taking risks [24,30,31].On the contrary, transactional leadership style is needed for exploitation.The term exploitation refers to the philosophy of the organization to focus on efficiency and effectiveness by sticking to production rules and procedures [24,30,31].However, the long-term survival and success of the organization are achieved in cases where the organization exploits effectively and efficiently its current resources and at the same time explores future opportunities [32].
In other words, ambidextrous leaders may succeed in achieving organizational goals, both in the short-run and in the long-run, by appropriately balancing explorative and exploitative activities [16].However, it is argued that in developing this balancing, or in developing organizational ambidexterity, the organization takes into consideration the frontiers of its ambidextrous leadership by imposing an emphasis on the parallel relationships between the transformational leadership style and exploration and the transactional leadership style and exploitation [33].Accordingly, we hypothesize the following: Hypothesis 3 (H3).The transformational leadership style is positively related to explorer attributes.

Hypothesis 4 (H4).
The transactional leadership style is positively related to exploiter attributes.

Organizational Ambidexterity and the Circular Economy
The concept of the circular economy, which has emerged as a new business paradigm, comprises "four emerging components to achieve sustainability: (1) recirculation of resources and energy; (2) the minimization of demand for resources, and the recovery of value from waste (namely reuse, reduce, and recycle); (3) the need for a multi-level (micro, meso and macro) approach; and (4) its importance as a path to achieve sustainable development ( [34])" [1] (p. 2).
Review studies [2] revealed that in investigating the circular economy aspects, many antecedents have been used, covering both internal and external contexts.However, we argue that in following this new business paradigm, an appropriate concrete business strategy should be applied.This business strategy could depend on organizational ambidexterity, under the guidance of ambidextrous leadership, since these concepts incorporate both internal and external information.In particular, organizational ambidexterity focuses on innovation (i.e., exploration) and efficiency (i.e., exploitation), which could be used for successfully attaining the so-called the circular economy fields of action comprising design, procurement, production, distribution, usage/consumption, and recovery [35].
We argue that in cases where the organization is facing current problems, it will devote itself to the use of exploitation activities that are more compatible with the circular economy fields of action, such as production and recovery.On the contrary, in cases where the organization is facing future problems, it will devote itself to the use of exploration activities that are more compatible with the circular economy fields of action, such as design and distribution [36].Accordingly, we hypothesize the following: Hypothesis 5 (H5).Explorer attributes are positively related to the circular economy fields of actions.

Hypothesis 6 (H6).
Exploiter attributes are positively related to the circular economy fields of actions.

Circular Economy and Sustainable Performance
A resource-based view (RBV) of a firm [37] is the usual theory for explaining the circular economy business paradigm.According to this theory, the sustained competitive advantage of a firm is based on its valuable, rare, inimitable, and non-substitutable resources.Attached to RBV is the so-called natural-resource-based-view (NRBV) of the firm [38] and the knowledge-based view (KBV), which considers knowledge to be the most important strategic resource of the firm [39].These theories are considered to be the most influential theories in sustainability literature, describing the connection between strategic management and sustainability performance [40,41].
Based on these theories, previous studies [42,43] in various countries (e.g., China, European Union) on the relationship between the circular economy fields of action and sustainability performance found that there is a positive association between these two concepts.In particular, Prieto-Sandoval et al. [44] argue that the firms that provide to their customers greener products, by using circular economy processes, will eventually achieve higher sustainability performance due to a better reputation.Similarly, other scholars [45][46][47][48][49] argue that firms, by developing and practicing circular economy processes, will eventually improve all dimensions of their sustainability performance.Accordingly, we hypothesize the following: Hypothesis 7 (H7).Circular economy fields of actions are positively related to sustainability performance.

The Conceptual Model
By summarizing the previous presentation, Figure 1 reflects the conceptual model of the study.In particular, this model refers to two components: The first is the serially mediating mechanisms between environmental features, ambidextrous leadership, organizational ambidexterity, the circular economy fields of action, and sustainability performance.The second is the operationalization of the concept of ambidexterity.Bearing in mind that there may be no clear-cut between transformational and transactional leadership style constructs and between explorer and exploiter attribute constructs, we allowed them to correlate [50].Thus, we did not follow the interaction approach for expressing ambidexterity, but we followed the correlation approach for expressing combined ambidexterity (for more, see [21,36,[51][52][53]). Additionally, in our conceptual model, we included both organizational and individual controls since these controls may influence most of the constructs in our model [54].
them to correlate [50].Thus, we did not follow the interaction approach for expressing ambidexterity, but we followed the correlation approach for expressing combined ambidexterity (for more, see [21,36,[51][52][53]). Additionally, in our conceptual model, we included both organizational and individual controls since these controls may influence most of the constructs in our model [54].

Participants and Procedures
Data for this research were collected in November-December 2022 with the help of students from a business school.The 80 students that took part in the study followed a lecture about the meaning of the study and the specific questionnaire that they should administer, as well as a lecture about sampling with a focus on convenience sampling and how to implement it.Each student was advised to reach two public or private organizations among the manufacturing, services or trade sectors.Further, following [55] they were also advised to focus, if possible, on at least two senior managers (e.g., heads of departments), two middle managers (e.g., line managers), and four employees (e.g., not supervising other employees) from each research organization for increasing the reliability of the measures.Overall, although 160 organizations and 1280 individuals should have been approached, complete questionnaires were gathered from 875 employees working in 112 organizations.This means that the response rate with respect to organizations was 70.0 percent and with respect to employees, 68.4 percent.The demographics of the sample organizations and the respondents are presented in Table 1.

Participants and Procedures
Data for this research were collected in November-December 2022 with the help of students from a business school.The 80 students that took part in the study followed a lecture about the meaning of the study and the specific questionnaire that they should administer, as well as a lecture about sampling with a focus on convenience sampling and how to implement it.Each student was advised to reach two public or private organizations among the manufacturing, services or trade sectors.Further, following [55] they were also advised to focus, if possible, on at least two senior managers (e.g., heads of departments), two middle managers (e.g., line managers), and four employees (e.g., not supervising other employees) from each research organization for increasing the reliability of the measures.Overall, although 160 organizations and 1280 individuals should have been approached, complete questionnaires were gathered from 875 employees working in 112 organizations.This means that the response rate with respect to organizations was 70.0 percent and with respect to employees, 68.4 percent.The demographics of the sample organizations and the respondents are presented in Table 1.

Measures
All items used in the survey were developed using a five-point Likert scale, ranging from 1 = strongly disagree to 5 = strongly agree.The complete questionnaire used in the survey is presented at the Appendix A.

External Environment
This construct comprised two sub-scales based on [22]-environmental dynamism and competition dynamics.Example items included "Environmental changes in our local market are intense" and "Our organizational unit has relatively strong competitors", respectively.

Transformational Leadership
This construct comprised five sub-scales based on [56]-idealized influential behavior, attributed idealized behavior, inspirational motivation, intellectual stimulation, and individual consideration.Example items included "Our managers consider the moral and ethical consequences of decisions", "Our managers are proud about their employees", "Our managers talk enthusiastically about the future", "Our managers reexamine critical assumptions to question whether they are appropriate", and "Our managers help employees to develop their abilities".

Transactional Leadership
This construct comprised two sub-scales also based on [56]-contingent reward and active management by exception.Example items included "Our managers make clear what they except to receive from employees" and "Our managers keep track of all employee mistakes", respectively.

Explorer Attributes
This construct comprised two sub-scales based on [57]-knowledge practices and innovative practices.Example items included "Our organization generates new ideas" and "Our organization focuses on completely new products or process", respectively.

Exploiter Attributes
This construct comprised four sub-scales also based on [57]-competition, strategic orientation, efficiency, and partnership.Example items included "Our organization faces the appearance of new competitors (new arrivals)", "Our organization has a strategic view focused on the present", "Our organization creates detailed routines", and "Our organization has local relationships with outside partners, respectively.
Table 2 presents the consistency, reliability and aggregation properties of all the firstorder constructs included in the study.Table 3 presents the descriptive statistics, the normality tests, and the properties of all constructs used in the estimation.In particular, the Cronbach's alpha values for each construct were greater than 0.70 [58], except those of the "external environment" (0.662) and "transactional leadership" (0.640).However, in utilizing their information, we kept these constructs in the estimation because their Cronbach's alpha values were not very different from 0.70.The Total Variance Extracted (TVE) of all constructs were not lower than 0.50, supporting acceptable survey instrument construct validity.The values of the Composite Reliability (CR) were higher than 0.80, indicating acceptable construct composite reliability [59].Considering that the skewness statistics of all constructs were between −1 and +1 and their kurtosis statistics were between −3 and +3, we accepted that non-normality was not a problem [59,60].However, to be on the safe side, we also applied the very sensitive Kolmogorov-Smirnov (KS) test for normality, which indicated that the constructs of explorer attributes, exploiter attributes, and the circular economy fields of action followed a normal distribution.

Common Method Bias
For reducing possible common method bias in the survey, we followed [61] by recruiting multiple respondents from different actors in the organization such as senior managers, middle managers, and other employees.Additionally, we applied Harman's single-factor test [62] to examine the likelihood of a common method bias threat.This test revealed four factors instead of one, with the first factor covering 39.284 percent of the total variance explained.Accordingly, we accepted that that the common method bias in the data was rather limited.
Further, using the information presented in Table 4, we examined the discriminant validity of the constructs used in the estimation.Considering that the correlation coefficients between pairs of constructs were significantly much lower than one and they were also smaller than the square root of each construct's Average Variance Explained (AVE), the constructs used in the estimation were considered separate [63].

Results
For estimating the model presented in Figure 1, we applied Structural Equation Modelling (SEM) [59,64] at a significance level equal to 0.05.This is because all constructs of the conceptual model are measured with multiple dimensions and they are formed under serially mediated mechanisms [65].Taking into consideration that some of the constructs did not follow the normality assumption, we used the MLR estimation technique, via Mplus, because this technique makes all necessary adjustments to the calculated fit indices [66].

The Measurement Model
The conceptual model of the study presented in Figure 1 consisted of seven constructs.By applying Confirmatory Factor Analysis (CFA) to this hypothesized model, the following fit indices were derived: Chi-square = 1499.918,df = 231, p = 0.000, Normed Chi-square = 6.49,RMSEA = 0.079, CFI = 0.870, TLI = 0.845, SRMR = 0.062.These indices supported an acceptable fit according to [67], who recommends that a model be sufficient in one fit index but insufficient in many others.We note here that the critical values of these indices, which assessed the acceptability of complex models, were as follows: Normed Chisquare < 5.0, RMSEA < 0.080, CFI > 0.80, TLI > 0.80, SRMR < 0.080.By applying CFA using the same constructs but formed as a Harman's single factor model, the derived fit indices were the following: Chi-square = 3488.681,df = 252, p = 0.000, Normed Chi-square = 13.84,RMSEA = 0.121, CFI = 0.669, TLI = 0.637, SRMR = 0.096.The values of these indices are very poor compared to the hypothesized model.This comparison indicates that respondent bias is limited, and the constructs of the hypothesized model are separate [68].

The Structural Model
In applying SEM to the conceptual model presented in Figure 1, the following fit indices were derived: Chi-square = 1898.647,df = 311, p = 0.000, Normed Chi-square = 6.105,RMSEA = 0.076, CFI = 0.844, TLI = 0.826, SRMR = 0.072.The values of these indices were acceptable, except that of the Normed Chi-square, possibly due to the complexity of the model [69].However, considering that this is a serially and fully mediating model, we made attempts to estimate various serially but partially mediating models.In these attempts, the extra direct links were not significant.Therefore, we concluded that the fully mediated model was preferable and as such, Figure 2 presents the estimated significant results in standardized units.In applying SEM to the conceptual model presented in Figure 1, the following fit indices were derived: Chi-square = 1898.647,df = 311, p = 0.000, Normed Chi-square = 6.105,RMSEA = 0.076, CFI = 0.844, TLI = 0.826, SRMR = 0.072.The values of these indices were acceptable, except that of the Normed Chi-square, possibly due to the complexity of the model [69].However, considering that this is a serially and fully mediating model, we made attempts to estimate various serially but partially mediating models.In these attempts, the extra direct links were not significant.Therefore, we concluded that the fully mediated model was preferable and as such, Figure 2 presents the estimated significant results in standardized units.

Testing the Hypotheses
From the results in Figure 2, we can see that environmental feature, with environmental competitiveness being the dominant factor (β = 0.715), positively predicted both the transformational leadership style (F1→F2: β = 0.452) and transactional leadership style
By investigating the two serially mediating mechanisms from F2 to F7 and from F3 to F7, we found that the transformation leadership style had a higher impact on sustainability performance (0.353, with lower bound = 0.265 and upper bound 0.442) compared to the impact of the transactional leadership style on sustainability performance (0.259, with lower bound = 0.175 and upper bound 0.342).
In terms of the controls, higher level employees followed more transformational leadership styles (β = −0.162)than transactional leadership styles (β = −0.114),sustainability performance was higher in private than in public organizations (β = 0.062), and sustainability performance was lower in organizations operating in the trade sector (β = −0.078).

Comparing Results with Those from Other Studies
Dey et al. [1] developed and estimated a structural model referring to the relationship between the circular economy and sustainability performance for Greece, Spain, France, and the UK (p. 7).Considering the Mediterranean countries of Greece and Spain, their estimated standardized results are presented in Table 5.In the same table we also present the corresponding results of the current study of Greece, produced by multiplying the structural coefficient (0.899) of the link between the circular economy construct and the sustainability performance construct with the coefficients of the three dimensions of the sustainability performance, 0.708, 0.823, and 0.710, as shown in Figure 2. By comparing these results, we see that in the study of Dey et al. [1], for both Greece and Spain, the standardized coefficients in descending order followed the series of environmental performance, economic performance, and social performance.The same exact series followed the results of the current study, verifying their robustness.Table 6 presents the results referring to the organizational ambidexterity of Greece between the study of Katou et al. [24] and the current study.Comparing these results, we see that for both studies, the standardized coefficients in descending order for explorer attributes was the same (i.e., Knowledge practices, Innovative practices), and for exploiter attributes, was also the same (i.e., Efficiency, Competition, Partnership, Strategic orientation).We argue that this finding verifies the robustness of the results in both studies.

Discussion
The scope of this study was to investigate the impact of ambidextrous leadership on sustainability performance through the serially mediating mechanisms of organizational ambidexterity and the circular economy fields of action.The results suggest that the impact of the transformational leadership style on sustainability performance was higher compared to the impact of the transactional leadership style.In general, it is stated that combining individual consideration with contingent rewards (i.e., ambidextrous leadership) and knowledge practices with efficiency (i.e., organizational ambidexterity) will improve environmental performance through the circular economy fields of action.Further, the level of employees, the ownership of organizations, and the sector where organizations are activated have an impact on sustainability performance.Accordingly, we state that all research questions of the study have been adequately investigated at the organizational level [26].

Theoretical Implications
Over the last few decades, the relationship between the circular economy and sustainability performance has become an important topic in management literature.However, there are few theoretical and empirical studies that investigate the antecedent's structure of the circular economy-sustainability performance relationship [2,70].Accordingly, in our study, the proposed conceptual framework that is now empirically supported has a number of theoretical and research contributions.
First, considering that the drivers of the circular economy business models are still unclear [71], it advances both theoretically and empirically that organizational ambidexterity constitutes an antecedent structure of the circular economy-sustainability performance relationship.Accordingly, it is indicated that mainly balancing knowledge practices with efficiency facilitates the circular economy production processes, which in turn improve sustainability performance.
Second, based on ambidextrous leadership styles [33], it advances both theoretically and empirically that ambidextrous leadership constitutes an antecedent structure of organizational ambidexterity.Accordingly, it is indicated that mainly balancing individual employee consideration with contingent rewards develops organizational ambidexterity that in turn facilitates the circular economy, which ultimately improves sustainability performance.
Third, based on environmental features [29,72], it advances both theoretically and empirically that external dynamic environments constitute the initiating factors that are responsible for developing ambidextrous leadership styles in the organization.Indeed, we argue that this ambidextrous leadership strategy it is applied under the resource-based view (RBV) of the firm [37].
Finally, the robustness of the findings that were verified by comparing results of studies dealing individually with ambidexterity and the circular economy brings new paths in developing theoretical and empirical frameworks in the sustainability literature.

Practical Implications
In terms of being able to apply the circular economy fields of action, leaders should be able to manage the following: Become ambidextrous leaders: This could be achieved by learning how to inspire and motivate people and at the same time how to educate people in the direction of specific goals.To successfully apply these two processes, leaders must start by self-evaluating their knowledge and then examine whether this knowledge can be facilitated within their behavioral leadership style [53].
Balance exploration and exploitation: Organizations must develop ambidextrous leaders since our study verified that transformational leaders have a high and positive influence on exploration, and similarly, transactional leaders have also a high and positive influence on exploitation.This process should be applied especially to public organizations [73], as our study found that sustainability performance of public organizations is lower compared to the sustainability performance of private organizations.Additionally, exploitation leaders could transfer duties to their deputies in order to have more time to put emphasis on exploration [33].
Promoting exploration and exploitation: Exploitation could be promoted through training and performance management for improving effectiveness and efficiency.Exploration could be promoted through knowledge and innovation management for capturing the best future processes through experimentation [33].
Applying the circular economy processes: This could be achieved by synchronizing organizational ambidexterity processes with the circular economy fields of action in order to assess their impact on sustainability performance [1].Further, an ambidextrous organizational culture that involves organizational diversity and shared vision should be developed [74].

Limitations and Future Research
First, the data were collected in November-December 2022 using a static questionnaire.As a result, the data do not allow for dynamic causal inferences.For that reason, future research using longitudinal responses may further add to the understanding of the phenomenon under study.
Second, single respondent bias is probable because both dependent and independent variables were self-reported.However, despite that the ex-post test was used to assess the level of common bias, future research using responses from different sources may relax the possible level of biased results.
Third, given the cross-sectional character of our study, the explanation of results with respect to the hypotheses indicates associations rather than influences or impacts.
Fourth, although the respondent sample size (n = 875) was large, and the organizational sample size (N = 112) was rather small for estimating such a complex model, and future research should try to collect data from more organizations.
Fifth, the phenomenon under study refers to Greece, which is a member of the European Union.Future research should include more countries for improving the acceptability of the results.However, in spite of these limitations, we believe that we still make the above-claimed useful contributions.

QUESTIONNAIRE ITEMS
Environmental Features (based on [22]) Environmental Dynamism Environmental changes in our local market are intense Our clients regularly ask for new products and services In our local market, changes are taking place continuously In a year, many things changed in our market In our market, the volumes of products and services to be delivered change fast and often Environmental Competitiveness Competition in our local market is intense Our organizational unit has relatively strong competitors Competition in our local market is extremely high Price competition is a hallmark of our local market Leadership Styles (based on [56]) Transformational Leadership Style Idealized influence behaviour Our managers consider the moral and ethical consequences of decisions Our managers make clear the importance of having a strong sense of duty Our managers emphasize how important it is to respect colleagues and work together as a team Our managers enlighten employees about the importance of having moral values Attributed idealized influence Our managers are proud about their employees Our managers go beyond self-interest for the good of their employees Our managers act in a way that earns employee respect Our managers demonstrate a great sense of confidence Inspirational motivation Our managers talk enthusiastically about the future Our managers speak passionately about the goals to be achieved Our managers present a vision of the future that motivates employees Our managers transfer confidence to employees that the organizational goals and objectives will be achieved Intellectual stimulation Our managers re-examine critical assumptions to question whether they are appropriate Our managers suggest new ways to employees for completing their tasks Our managers look problems from different perspectives Our managers present different angles for solving a problem Individualized consideration Our managers help employees to develop their abilities Our managers encourage employees to improve their work-related skills Our managers dedicate their time to individual attention to employees Our managers coach employees for helping them to improve their on-the-job performance Transactional Leadership Style Contingent reward Our managers make clear what they except to receive from employees Our managers support employees when they do their tasks and activities well Our managers continually remind employees that our reward will depend on us meeting the objectives Our managers Highlight only the employees who perform the tasks correctly Active management by exception Our managers keep track of all employee mistakes Our managers remind employees of all their failures Our managers focus their attention on employee non-compliance with the rules Our managers focus on employee failures in performing tasks Organizational Ambidexterity (based on [57]) Explorer Attributes Knowledge practices Our organization generates new ideas Our organization uses new sources of knowledge drawn from partners Our organization uses existing knowledge in databases Our organization uses of knowledge already in place in the company Our organization shares in-house knowledge Our organization follows individual learning processes Our organization follows collective learning processes Our organization builds up team capacities Our organization develops personnel intensively Our organization appreciates individual knowledge Innovative Practices Our organization focuses on completely new products or process Our organization engages in prototype development Our organization increases product innovation rate Our organization applies marketing innovation techniques Our organization opens new distribution channels Our organization focuses on radical product innovations Our organization focuses on radical technology innovation Our organization enforces ceaseless quest for new markets Our organization develops new products and services Our organization follows aggressive participation in technology-based alliances Exploiter attributes Competition Our organization faces the appearance of new competitors (new arrivals) Our organization faces the existence of substitute products or processes Our organization faces competition on the local (Greek) market Our organization faces price-base competition on the local (Greek) market Our organization faces a fierce competition in company industry Our organization faces the existence of promotion war in company industry Our organization competition covers company offers easily Our organization price-based competition is the high point of the company industry Strategic Orientation Our organization has a strategic view focused on the present Our organization follows policies focused on the short term Efficiency Our organization creates detailed routines Our organization considers the importance of efficiency Our organization focuses on performing activities Our organization has concerns with gains of scale Our organization applies organizational control mechanisms Our organization focuses on costs Our organization has a tendency to focus towards production Partnership Our organization has local relationships with outside partners Our organization depends on outside partners Our organization uses contracts in relationships with outside partners Our organization is transparent in joint efforts with partners Our organization keeps duration of outside partnerships Our organization shares knowledge with partners Our organization shows concern with establishing outside partnerships Our organization establishes a high number of outside partners for the company Cyclical Economy Fields of Action (based on [1]

Figure 2 .
Figure 2. Estimation results of the conceptual model.

Figure 2 .
Figure 2. Estimation results of the conceptual model.

Table 2 .
Properties of first-order constructs.

Table 3 .
Descriptive statistics, normality tests, and properties of all constructs used in the estimation.

Table 4 .
Correlation coefficients of all constructs used in the estimation.
a Square root of the average variance explained.b All correlation coefficients were significant at the 0.01 level (2-tailed).

Table 5 .
Comparison of the estimation results between different countries.

Table 6 .
Comparison of the estimation results between different studies in Greece.

)
Design Our organization designs aiming at extending product life Our organization selects materials carefully Our organization designs products for reuse, recycle and remanufacture Our organization designs products following ecological standards Procurement Our organization applies environmental and social criteria in the selection of suppliers Our organization prefers local sourcing to mitigate risks Our organization supports supply chain collaboration Production Our organization follows lean practices Our organization focus on energy efficiency Our organization use of renewable energy Our organization supports wellbeing and equality Distribution Our organization prefers outbound storage Our organization prefers outbound transportation Usage/Consumption Our organization provides sourcing information Our organization provides repair information Our organization buys back used products from customers Recover Our organization remanufactures and refurbishes Our organization reuses and recycles Sustainable Performance (based on [1] Economic performance Our organization increases revenue Our organization improves business growth Our organization contributes to local economy Environmental performance Our organization increases energy efficiency Our organization improves resource efficiency Our organization contributes to waste reduction Social performance Our organization increases employee wellbeing Our organization improves health and safety Our organization contributes to social wellbeing