%0 Journal Article %T Piece-Rates, Principal-Agent Models, and Productivity Profiles: Parametric and Semi-Parametric Evidence from Payroll Records %A Shearer, Bruce %A , %J The Journal of Human Resources %V 31 %N 2 %P 275 %@ 0022-166X %D 1996-01-01 %I JSTOR %~ DeepDyve