Using an empirical taxonomy identifying two types of human resource sy
stems, ''control'' and ''commitment,'' this study tested the strategic
human resource proposition that specific combinations of policies and
practices are useful in predicting differences in performance and tur
nover across steel ''minimills.'' The mills with commitment systems ha
d higher productivity, lower scrap rates, and lower employee turnover
than those with control systems. In addition, human resource system mo
derated the relationship between turnover and manufacturing performanc
e.