Dual job holding is widespread in Iran’s labor market, 18% of work force are holding second job in 1993, which increased to 19% in 2003. Using a rich three years panel data-set of socioeconomic characteristics of Iranian households, the article aims to examine the determinants of dual job holding across the individuals who have participated in the labor market. Since the issue of dual job holding is the result of a two selection processes by the individuals, we apply a dual sample selection technique in the econometric analysis, which is based on the Tunali(1985). Our findings explore that age, gender, marital status, education are the main determinants of work hours in the first job, and wage rate in the first job, gender and age are the main driving forces of the second job holding probability.
JEL Classification: J2, J6, J22