According to endogenous growth theory, permanent changes in certain policy variables have permanent effects on the rate of economic growth. Empirically, however, U. S. growth rates exhibit no large persistent changes. Therefore, the determinants of long-run growth highlighted by a specific growth model must similarly exhibit no large persistent changes, or the persistent movement in these variables must be offsetting. Otherwise, the growth model is inconsistent with time series evidence. This paper argues that many AK-style models and R&D-based models of endogenous growth are rejected by this criterion. The rejection of the R&D-based models is particularly strong.

We report the first results for Japanese firms on the effects of employee stock-ownership plans (ESOP's) and bonuses by estimating production functions using new panel data. We find that the introduction of an ESOP will lead to a 4-5-percent increase in productivity; this productivity payoff takes 3-4 years. There is a modest productivity gain from the bonus system. We also find evidence that the productivity effect of bonuses is enhanced by the existence of ESOP's, suggesting that ESOP's may create a climate conducive to profit-sharing by enhancing long-term commitment and peer monitoring.

The authors report the first results for Japanese firms on the effects of employee stock-ownership plans (ESOPs) and bonuses by estimating production functions using new panel data. They find that the introduction of an ESOP will lead to a 4-5 percent increase in productivity; this productivity payoff takes three to four years. There is a modest productivity gain from the bonus system. The authors also find evidence that the productivity effect of bonuses is enhanced by the existence of ESOPs, suggesting that ESOPs may create a climate conducive to profit-sharing by enhancing long-term commitment and peer monitoring. Copyright 1995 by American Economic Association.