This study investigates relationship between academic performance, subjective well-being (happiness) and part-time work of 299 international students studying at postgraduate level in a tertiary institute in New Zealand. A quantitative approach is used and a robust set of demographic factors and explanatory variables is controlled for to identify the relationship between academic performance, happiness and part-time work of international students. The Oxford Happiness Questionnaire (OHQ) is used for measuring the happiness of the research participants. The findings of this study suggest that 91 percent of the students participated in the research are happy; however, happiness has no statistically significant effects on academic performance of the students. A significant relationship exists between happiness and academic performance if different cut-off levels of happiness are used to divide the full sample of observation. Happiness affects the academic performance negatively when the students’ happiness level is above the median level. A large number of international students are engaged in part-time work. This study also finds that engaging in part-time work of full-time students have adverse effects on the academic performance
Keywords: : Academic Performance, Happiness, Part-Time Work