This article provides a theoretical framework for understanding why hi
gh-involvement work practices are adopted more rapidly by some organiz
ations than others. Drawing on evolutionary economics and innovation l
iterature, we identify three key drivers: (1) the level of complementa
ry human resource practices and technology; (2) performance achieved w
ith previous practices; and (3) factors that alter the cost of introdu
cing new practices. Empirical analyses of a unique longitudinal data s
et of forty-three automobile assembly plants worldwide provide support
for hypotheses about complementary HR practices (but not complementar
y technologies) and partial support for hypotheses about past performa
nce and factors that alter adoption costs.