This descriptive correlational study, conducted in March 2010, sought to determine the self-esteem, locus of control, conflict management style of working students and their relation to academic performance in the Province of Antique. It also aimed at ascertaining significant differences and significant relationship of self-esteem, locus of control, conflict of management style and academic performance of 75 working students in the tertiary level in the Province of Antique. It employed purposive sampling technique. The data for investigation were utilizing the Sorensen's Self-Esteem Test, Rotters' Internal-External Locus of Control Scale, and Thomas-Kilmann Conflict Management Mode. The academic performance of the working students was based on their weighted grade point average (GPA) during the first semester of school year 2009-2010. To describe the data, the researcher utilized frequency, percentage mean scores, and standard deviation for descriptive statistics. For inferential analysis, the researcher employed t-test, chi -square test of association, chi-square test of independence, analysis of variance, Pearson's r, and Linear Regression Analysis all set at .05 alpa level. All statistical computations were processed through the statistical Package for the Social Sciences (SPSS) software. The results revealed that the working students have very good academic performance, moderately low self-esteem , have internal locus of control, and avoiding style as the most dominantly used conflict management style. No significant difference was found between academic performance and self-esteem; and between academic performance and locus of control. However, a significant difference was found between academic performance and conflict management style of participants. There was no significant relationship between academic performance and self-esteem; and between academic performance and locus of control. However, a significant relationship was found between academic performance and conflict management style of the participants. Self-esteem, locus of control, and conflict management style were not predictors of the academic performance of the working students.