Interview calendar month which varies from 1 to 12
binary variable equal to 1 if a worker was unionized in 1997 and 0 otherwise
age (in years) of the worker in 1996
binary variable equal to 1 is the worker is black and 0 otherwise
binary variable equal to 1 if the worker is Hispanic and 0 otherwise
binary variable equal to 1 for married worker and 0 otherwise
2-digit code for state of residence
2-digit code for the sector of activity of the worker
highest grade attained by worker observed in 1996
log hourly wage of the worker 1997
log hourly wage of the worker 1996
binary variable equal to 1 for workers that have completed high school and 0 oth
binary variable equal to 1 for workers that have completed college and 0 otherwi
change of log hourly wage of the worker between 1997 and 1996