NLSY: Many Cases of Inconsistent Variable Labels

There are about 1,500 cases of questions where the value labels are different from year to year. 

For instance, YEMP-58400. In 2001, value 12 has the label 'Working conditions', while in 2005, value 12 has the label 'Moved away from job'

Or, for YEMP-21600, in 1997, value 9 is 'By the job or by the game' but in other years it is 'R works in family business without getting paid'

