Model of Expatriates’ Job Performance Based on Cross-Cultural Adjustment to Work Stress and Work Adaptation

The study aims to determine factors affecting the job performance relating to cross-cultural adjustment as it affects work stress and work adaptation. For this study, the research framework was based on cross-cultural flexibility associated with work adaptation and work stress on job performance among expatriates. The research was conducted on a sample of 396 expatriates working in the hospitality industry in Taiwan. Structural equation modeling was utilized in this study. The obtained results confirmed the impact of cross-cultural adjustment on work stress, the negative impact of work stress on job performance; and also, the positive impact of cross-cultural adjustment on work adaptation, and work adaptation on job performance. The results show that the challenges faced by expatriates are derived from work adaption, work stress, and cultural differences. Expatriates who can adapt to the different cultures of foreign countries have higher work participation. It has also been found that a significant correlation exists between cross-cultural adjustments on work pressure. Higher work stress translates into relatively lower job performance. Model of Expatriates’ Job Performance Based on Cross-Cultural Adjustment to Work Stress and


Introduction
With increasing globalization, companies are entering an energetic world of global business. Sending employees to work abroad is becoming normal practice.
However, there are complex challenges in managing expatriate employees. Sending expatriate employees abroad includes a full host of issues, with the expense Y.-S. Lee DOI: 10.4236/tel.2021.113036 541 Theoretical Economics Letters of expatriate failure looming large (Chen & Shaffer, 2018). This research investigates various approaches to assist expatriates in integrating into Taiwan's hospitality industry and enhancing their job performance. It then turns to the management of expatriate employees, including exploring their work stress, work adaptation and job performance. Finally, this paper describes the challenges occurring in the management of expatriate employees, and the impact of crosscultural adjustment on international human resources management. The purpose of managing expatriate employees is to boost cross-cultural flexibility as an important element that smooths their work stress and work adaptation; it is also a component related to the job performance of a company in a hit or miss environment (Wang et al., 2020). Consideration of cross-cultural adjustment caused by differences in life and social culture and their influence on an expatriate employee's work stress (Sterle et al., 2018;Strong, 2005), with an increasing number of expatriate employees, expatriation expenses for companies become higher. Expatriates result in resignation because of losing their self-esteem and having negative attitudes. Expatriate management will be an essential consideration in future human resource management and also a significant challenge. Companies should emphasize the success of expatriated employees and supply the necessary support for their career abroad (Vijayakumar & Cunningham, 2016). Furthermore, assistance of expatriate employees during times of individual emergency, also with providing tools for relief of their anxiety is essential. Studies concerning expatriate management began as early as the 1970s; however, this research has only begun more recently in Taiwan. Thus, a Taiwanese research project on expatriate employee management has not yet been formed. In summary, from the perspective of balancing the work stress, work adaptation and job performance after cross-cultural adjustment, this study was conducted via questionnaires to investigate the implication of these factors on expatriate job performance. This study makes several contributions to expatriate management and cross-cultural flexibility (McNulty et al., 2017), and presents a brand-new model of cross-cultural adjustment as it affects how job stress and job adaptation relate to job performance.

Research Background
The management of expatriate employees is also perceived as the management of the relationship between host-country managers and expatiate employees to produce the best value for expatriates functioning. In developing an appropriate model of expatriate management, it is important to emphasize the requirement for integration within cross-cultural adjustment. The development of an expatriate management model across differing cultures will also be a gradual process. The literature contains numerous studies that try to demonstrate cross-cultural adjustment for expatriates cooperated to realize effects and affected the job per-Y.-S. Lee DOI: 10.4236/tel.2021.113036 542 Theoretical Economics Letters formance. Well work adaption requires achieving a level of cultural flexibility that permits expatriate to achieve their best performance (Caligiuri, Baytalskaya, & Lazarova, 2016). The following issues should be considered: low job performance as associated with high work stress; and consequences of labor adaption as related to efficiency and high job performance. An objective should be to decrease work stress because high work-stressed expatriates are less competitive and, therefore, deliver a lower level of job performance. However, to achieve a high level of job performance, an extra level of internal tension is required in the workplace with bottom level of labor stress. Marcenes and Sheiham (1992) stated that employment stress is related to the most important risk which implies that an employee's lower tolerance stress and greater tendency toward excessive caution are related to the danger of disrupting job performance, increasing costs, and missing out on the chance to cooperate with others and achieve higher levels of performance; hence, it is important to that human resource are provided to support expatriates with latent disabilities in workplace (Ziervogel, 2019).
Fundamentally, expatriate management should be built around achieving cross-culture adjustment while minimizing the disorientation among expatriates (Linder, 2015). Expatriates are essential for collaboration (Jun, Gentry & Hyun, 2001;Trembath, 2016). According to Amiruddin's study (2019), issue such as culture, language, safety and security, and family life are typical for cooperative relationships in an expatriate. Spong and Kamau (2012) emphasized cross-cultural adjustment, work stress, work adaptation as factors which influencing job performance (Morrow, 2013).
Factors contributing to cooperation in an expatriate are indicated as determinants of the employee's relationship affecting work stress and work adaptation and are noted because the determinants of the expatriate's job performance as they affect the strength of cross-cultural adjustment (Bierwiaczonek & Waldzus, 2016;Murray, 2008).
Initially, work stress is primarily linked to the assessment of an expatriate's disorientation, their competences yet because the expected benefits of cooperation (Smith & Greenfields, 2012). Due to the shortage of previous experience, the central role in facilitating culture adjustment is given to management's continued support of, and assistance programs for, expatriates by Levine & Levine (2014); however, Briner, Harris & Daniels (2004) demonstrated that expatriates find local support more beneficial than long-distance contact with the human resource department in their home-country office. Local support groups can better understand and help with advice or practical assistance on a wide range of issues that can help settle in at their new location (Oltra et al., 2013;Wilson et al, 2017).

Cross-Cultural Adjustment
Cross-cultural adjustment refers to the method of adapting to life in the host culture. Fee (2020) described the methods of adjustment including acculturation, disorientation, and cross-cultural adaptation. Durand et al. (2004)  that expatriates begin the cross-cultural process with optimism, followed by levels of dissatisfaction, and at last ending in a recovery state. Kirkegaard and Brinkmann (2015) found that the majority of expatriate establish patterns for his or her cross-cultural adjustment looking at several conditions including: previous international experience, language acquisition, and cross-cultural training (Ford et al., 2016;Rozaimie, 2018). The concept of disorientation has been extended to include the process of emotional and condition of a private when individuals reenter their home country from another culture (Hack-Polay, 2020). An analysis of the impact of work stress and work adaptation on expatriate has been offered by Tharenou (2013). The authors demonstrated the impact of both constructs on expatriates' job performance and also their willingness to take on a foreign position in the future. Cavallo et al. (2005) divided work stress into interpersonal relationship stress, task relationship stress, organizational relationship stress, and physical and mental relationship stress. The literature largely emphasizes the influence of expatriate's job stress on cross culture adjustment (Wang, 2006). According to Karakaş & Tez-can (2019) measurements of work stress as applied within the study are: interpersonal relationship, task relationship, organizational relationship, and physical relationship. Interpersonal relationship is stipulated as the character of the local people, work characters, and the poor relationship among organization's team member due to conflict. Task relationship is demonstrated through large workloads, unclear tasks, and task conflicts (Lu et al., 2011). Organizational relationship is expounded to the organizational pattern, management model, and organizational support system. Physical relationship includes way of life, inconvenient transportation, and unfair treatment. Work stress increase the chance of expatriate's poor behavior and diminishes the necessity for an in-depth contract or other mechanisms accustomed secure and monitor the execution of transactions. Kirkegaard & Brinkmann (2015) asserted that work stress was a unique reaction to the interaction between the attitudes toward strong workplace-related conflicts. Weinberg (2015) reported that work stress can have a negative physiological and psychological influence on a worker when his or her individual capability does not live up to the corresponding work expectation (Shin, Morgeson & Campion, 2007).

Work Adaptation
Work adaptation is indicated as the main precursor of cooperation as well as the  (Braman et al., 2010;Snowden, 2011). Work adaptation determining that cooperative strategy can be successful and become the dominant strategy, cooperation should be mentioned (Brunner, 2016;Gvozdeva & Gvozdeva, 2006;Harvey & Novicevic, 2001). Management of expatriates differs from the typical employment relationship of native workers that determines when a person works or performs services under certain conditions in return for remuneration (Roniger, 2016;Ruddick, 2005).
There may be cultural differences in the application of social security, law provisions addressed to employees, and extent of employers' rights and obligations towards their workers (Loring et al., 2016;Orrange, 2003). H2: Cross-cultural adjustment has a significant impact on work adaptation of expatriates.

Job Performance
Job performance can also be increased by undertaking activities designed to strengthen job adaptation. According to Kleinschmidt and Jaeger (2016) (2013)

Conceptual Model
The research framework for this study is based on the notion that expatriate job performance requires cross culture adjustment, and job adaption and job stress are critical elements which influence to job performance among expatriate em- The literature shows that expatriate's work stress was primarily due to interpersonal relationship, task relationship, organizational relationship, and physical relationship.
Additionally, this study shows that expatriate work adaptation refers to a worker's satisfaction and acceptance of current work. Wok adaptation can be divided into two dimensions, such as the enthusiastic participation and individual initiative to improve one's work in comparison with others. Job performance can be expressed as the implementation of specific investments aimed at improving contributing to task success (Presbitero, 2017). The construct named cross-cultural adjustment was introduced as a precursor of work stress and work adaptation. Employees who have succeeded at home may not repeat that success abroad. Dispatched managers must choose expatriates who have both the necessary skills and also have indicated that they would be likely to live comfortably in different cultures.
The article provides definitions of the model related to expatriate's job performance then, it introduces the theoretical framework with hypotheses between constructs and describes the research methodology and outcomes of empirical investigation. Next, the article discusses the sampling and statistical methods used in the study to test the hypotheses and offers a discussion of the results and conclusions.

Structural Equation Modelling
Structural equation modelling (SEM) allows for building a model using latent variables that are difficult to measure directly by a single item, e.g. work stress, work adaption, and job performance. Latent variables are measured indirectly through observable variables, e.g. questionnaire answers. SEM combines regression analysis with confirmatory factor analysis and allows testing hypotheses with a high potential for the complexity of relationships between variables. The

Data Collection
A pilot test was conducted before sending the questionnaire. The head of the human resources department and three human resources experts and scholars reviewed the questionnaire to confirm whether the question was clear and revised the unclear items. Ensure the validity and reliability of the questionnaire. In response to the hospitality industry, 550 questionnaires were distributed to Indonesian workers in the Taiwanese hospitality industry, and 460 questionnaires were collected. The response rate of all questionnaires was 84%. To ensure that each questionnaire provide valid survey results, 64 invalid questionnaires were discarded, while 396 valid questionnaires were preserved. The final response rate of valid questionnaire was 72%, which met the requirements for validity.
The research constructs included cross-cultural adjustment; work stress, work adaptation, and job performance, comprising the total of 12 indicators (observable variables) (see Table 1). The questionnaire was compiled by the authors to physical and mental health. Work adaptation was measured by two items relating to self-disciplined and cooperation with colleagues. Job performance was measured by two items relating to the ability to accomplish tasks and achieve a high professional standard. A five-level Likert scale was used in the questionnaire to evaluate each indicator from "strongly disagree" (1) to "strongly agree" (5).

Research Process Design
The article provides definitions of the major theoretical constructs related to work stress, work adaption, and job performance based on cross-cultural adjustment.
Then, this study describes the theoretical framework with hypotheses between construct, research methodology and outcomes of empirical investigation. In the study structural equation modeling using the maximum likelihood method was used. The confirmatory factor analysis and the structural model were used. The data analysis was based on the IBM SPSS Statistics 25.0 software with an additional module (AMOS) used for structural equation modelling.

Results
In the first step, the confirmatory factor analysis (CFA) was conducted. CFA is used after the development of a scale to test whether specific items fall under the various dimensions of theoretical expectations. In this study, the measurement model exhibited at insignificant levels (p > 0.05). Also, the goodness-of -fit (GOF) indices were accepted by the measurement model exhibited at insignificant levels, (GOF) indices were accepted by the CMIN/DF = 1.312 (<2); RMSEA = 0.028 (<0.08), and GFI = 0.975 (>0.9) (see Figure 3). Furthermore, all factors were of a significant level (p > 0.001). The results of factor loadings on construct of cross culture adjustment, work stress, and job performance, the standardized regression weights linking a specific observable indicator with a latent variable were higher than 0.71 were categorized as excellent; factor loadings on construct of work adaptation are 0.475 and 0.670 (>0.45), and were categorized as sufficient (Hair et al, 2010) (see Table 1). Therefore, all indicators were included form the measurement model; a compound of four latent variables and 12 observable variables.
In addition, the results of the four major constructs indicated reliable indictors of composite reliability (CR) above 0.45 (from 0.497 to 0.891) and average variance extract (AVE) above 0.5 (from 0.0519 to 0.672), which satisfied the accepted requirements (see Table 2). Overall, these analyses support the reliability and validity of the constructs.
The structure model was specified based on the conceptual model ( Figure 1).
The result of the estimation of the structural model was that four paths proved to be statistically significant (see Table 3 In general, the conceptual model in this study relies on theoretical bases, the adequacy of indices of the CFA, and the satisfied GOF indices (see Figure 2).
The paths are tested in the conceptual framework. Table 3 presents the results of the paths in the model, including the standardized coefficient, standard error,   Table 3, the four hypotheses are found to be significant and supported the previous research. This study confirmed that: work stress and work adaptation are antecedent of job performance as was expressed by Sterle et al. (2018) and Thoms et al. (2002).
In addition, cross-cultural adjustment influence work stress and work adaptation as was formulated by Vermeulen et al. (2019).
The study also demonstrated the positive impact of cross-cultural adjustment on work stress and work adaptation. When selection expatriate, the characteristics of the host country must be considered, and the personal cross-cultural  adaptability of the potential expatriate must be evaluated. Selection for a combination of cross-cultural competence and personal adaptability ensure that expatriates can quickly adjust to the culture of the host country, thereby improving work performance (Fee, 2020).

Conclusion
The research aims to find that the factors affecting job performance include two elements. The first element is the influence of cross-cultural adjustment on work adaptation and work pressure. The second element is the impact of work adaptation and work pressure on job performance. This study established a model based on theoretical foundations, and through factor analysis and structural equation analysis, it was found that cross-cultural adjustment has a demonstrable effect on work adaption and work stress. Work adaptation is positively and significantly correlated with job performance, and work stress is negatively correlated with job performance. Therefore, in order to improve the performance of expatriates, organizations need to pay attention to the cross-cultural adaptation of employees.
This study was based on a questionnaire survey of foreign employees in the Taiwanese hospitality industry, most of whom are subordinate-level employees.
Therefore, the requirements for interpersonal communication in the workplace are relatively low at work. For high-level positions that require frequent communication with customers and supervisors, in terms of the cultural background of the employees, the capability of expatriates will be more diverse. Therefore, further research is needed in this area.

Conflicts of Interest
The author declares no conflicts of interest regarding the publication of this paper.