Date of Conferral

2021

Degree

Ph.D.

School

Management

Advisor

William W. Shriner

Abstract

There is a need to improve Thailand’s logistics organizations’ ethical behavior to achieve higher economic performance. Thailand risks falling behind international logistics performers if its logistics leaders do not implement the ethical behavior needed to create a national logistics nexus. The specific problem is that poor ethical behavior is culturally accepted in Thai logistics companies. The purpose of this quantitative correlational study was to examine the relationship between the independent variable of transformational leadership with the intervening variable of ethical behavior and the dependent variable of organizational performance. Three research questions were used to investigate the direct impact of the independent on the intervening variable, the direct impact of the intervening on the dependent variable, and the mediating effect of the intervening variable on the link between the independent and dependent variables. Useful responses on questionnaires were provided by 520 department managers from 581 Thai logistics organizations. Relationships between the variables were tested using multiple regression and path analysis. Study results showed that transformational leadership affected ethical behavior significantly, that ethical behavior substantially affected organizational performance. The mediating impact of ethical behavior on the link between transformational leadership and organizational performance was significant. This study’s results may contribute to positive social change by raising awareness of ethical issues endemic to Thailand, such as corruption. Improved ethical behavior may help Thai logistics organizations enhance their performance and help employees improve human relations for the benefit of a personal and familial level that could extend to the broader Thai society.

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