This thesis was aimed to compare the demographic factors of employees and organizational commitment and to study the relationship between benefit satisfaction and organizational engagement of Sirikarn Intertrade Company Limited employees. 60 people were the population who responded to the questionnaire. The data collected were analyzed by frequency mean standard deviation hypothesis testing mean t-test and F-test and correlation coefficient (Rho) determined by statistical significance at 0.05 The results of the study revealed that the majority of the respondents were males over the age of 34-41 years old. Most of the respondents’ education were below the bachelors degree 50 percent married and 50 percent single with the work tenure of more than 10 years. The analysis of employee engagement showed that their organizational engagement at Sirikarn Intertrade Company limited in the overall was very high. When considering the individual aspect top three aspects were work desire willingness to dedicate and trustworthiness. When considering overall satisfaction towards Sirikarn Intertrade Company Limited benefits the three highest aspects included safety recreation and bonus and welfare.

This research was aimed to 1) study the influence of transformational leadership and 2) to investigate the communication styles towards teamwork of academic employees at Aksorn Charoenthat Company Limited. This is descriptive research collecting data through a questionnaire constructed from reviewing relevant documents. 142 Aksorn Charoenthat Company Limited employees responded to the five-scale questionnaire divided into 4 parts with the total of 52 items. The collected data were statistically analyzed by percentage mean (μ) standard deviation (σ 2) multiple regression analysis to test multiple linear regression and Pearson Correlation Coefficients. The results of the hypothesis test on the influence of transformational leadership and communication styles towards teamwork of academic employees at Aksorn Charoenthat Company Limited showed that (1) the correlation coefficient analysis between the leadership and the teamwork were positively related and statistically significant at .01 level; (2) the correlation coefficient analysis between the communication styles with the teamwork of Aksorn Charoenthat Company Limited employees was positively and statistically significant at .01; and (3) the transformational leadership and communication styles influenced the teamwork of Aksorn Charoenthat Company Limited employees statistically significant at .05 (R = .724) and (R = .668).

The purposes of this research were to: study performance efficiency of Kasikorn Bank employees; to compare personal characteristics and performance efficiency of Kasikorn Bank employees; and study correlation of employee competencies to performance efficiency of Kasikorn Bank employees. The questionnaire and test were employed for collecting data from the sample group comprising 287 cases of Kasikorn Bank employees at Ratburana head office. The sample group was derived from simple random sampling. The frequency percentage mean standard deviation T-test one-way ANOVA and Pearson’s correlation with statistical significance at the level of 0.01 to 0..05 were applied for data analysis. The findings revealed that the majority of participants were female; aged between 18-30 years; working years were five years or more; and their position was unit chief. The result of difference comparison found that different genders ages and working years had no different effect to performance efficiency. Moreover correlation between employee competencies and performance efficiency of Kasikorn Bank employees it was found that correlation was at high level and the same direction.

The purposes of the study were to investigate 1) personal factors of practitioner level personnel working in Information Technology Department at Faculty of Medicine Siriraj Hospital Mahidol University 2) personnel’s organizational commitment levels and 3) compare personnel’s organizational commitment levels. The population in the study was 155 employees working in Information Technology Department at Faculty of Medicine Siriraj Hospital Mahidol University employing survey study. The data were collected through the questionnaire and analyzed by frequency distribution percentage distribution mean and standard deviation. The result of the study revealed that most of the employees working in Information Technology Department at Faculty of Medicine Siriraj Hospital Mahidol University were single females ranging from 21 to 30 years of age with average 20001 - 30000 Baht income and having bachelor degrees. They had worked in technical and practical employment at the Information Technology Department for average one to five years. The Information Technology Department personnel’s organizational commitment levels were high. When looking into each aspect the highest aspect was psychological commitment followed by high normative commitment and average retention commitment. The comparison result of personnel’s organizational commitment levels of the employees working in Information Technology Department at Faculty of Medicine Siriraj Hospital Mahidol University categorized by personal factors such as gender age income education marital status work retention revealed differences concerning psychological retention and normative commitments.

The purposes of the study were to investigate 1) Relationship between Quality of Work Life Organizational Commitment and Employee Loyalty 2) Levels of and Employee Loyalty and 3) Compare and Employee Loyalty at Wangtai hotel Suratthani according to their personal factors. The questionnaire was administered to 138 samples selected through convenience sampling and analyzed by the percentage distribution mean standard deviation t-test one – way ANOVA; Pearson Product Moment Correlation Coefficient analysis was set between 0.01 and 0.05 statistical significance. The study results revealed high level of the overall Quality of Work Life and Organizational Commitment as well as the Employee Loyalty which accordingly agreed with each other at 3.75. Moreover in terms of personal factors different ages resulted in different Employee Loyalty behaviors. Additionally the employees’ different marital status led to different affective aspects while salary incomes resulted in different perceptions towards the organizations and affective aspects. Also work experiences resulted in different employee loyalty behaviors at 0.05 statistical significance.