The Empirical Relevance of Okishio's Theorem
Abstract
Okishio's Theorem is proved to be theoretically robust in various respects |is it empirically relevant? This has been a question that still awaits a rigor-
ous answer since Shaikh's (1978) critique of Okishio's criterion for the choice
of technique. Our investigation of the post-WWII U.S. economy using an au-
toregressive distributed lag approach nds that, when controlling for the real
wage rate as is suggested in Okishio's Theorem, the steadily increasing organic
composition of capital, as an indicator of technical change, has a signicantly
positive long-run eect on both the general rate of prot and the prot margin.
This result provides empirical support for Okishio's Theorem and implies that
Shaikh's criterion highly overlaps with Okishio's | the possibility that capi-
talists might choose new production techniques that would increase the prot
margin but lower the rate of prot is not systematically observed.