The effect of differential shift costs on capital utilization

This paper presents the results of a micro study of the influence of the shift differential factor on utilization rates in Kenyan manufacturing. Qualitative information about the nature of technology and of shift differentials is incorporated into models of the choice of utilization rate under the alternative assumptions of constant returns to scale and increasing returns to scale. Econometric tests are then used to show that 1971 data is consistent with the theoretical predictions, although the results suggest that the quantitative significance of the shift differential factor in causing excess capacity should not be overstated.