A quality-adjusted specification of labor is suggested which allows firm training to affect labor efficiency. To assess the cost and productivity effects, this specification is integrated into a flexible neoclassical cost function. The empirical analysis uses panel data for eight plants in the...

Leif Johansens short run macro production function is used to explore the conditions for a productivity slowdown to take place simultaneously with an accelerated technical change in production. A capacity distribution such that the supply curve is concave at the extensive margin considerably...