Applying quantile analysis to detailed firm-level data from Mexico, the authors study determinants of demand and wages for two classes of labor. Unions appear to have a strong impact on how much unskilled labor is employed but not on wages. This suggests an extreme example of"monopoly...

There are increasing fears that trade reform - and globalization generally - will increase the uncertainty the average (especially less skilled) worker faces. If product markets become more competitive and the access to foreign inputs is increased, will demand for workers among existing firms...