This study aimed to test the hypothesis of labor supply response to changes in wages
in Indonesia. The hypotheses tested are neoclassical hypothesis or reference
dependent hypothesis from prospect theory. Neoclassical hypothesis indicated by
positive labor supply elasticity, while the reference dependent hypothesis is indicated
by negative labor supply elasticity. The data used is a panel data of 75 taxi drivers in
Surabaya, with observation 5 working days for each driver. Estimation technique
used was PLS, Fixed Effects and Instrumental variable. The instrumental variables
estimation techniques allow overcoming the problems of measurement error. The
estimation results find that reference dependent does exist on the overall study
sample. In the sub-sample of the driver with the partnership system was found to
have more negative elasticity