The Effect of Unions on Productivity Growth, Investment and Employment: A Report on some Recent Work

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Abstract
Using two British microeconomic data sets, this paper reports the following. (1) Union firms experienced faster productivity growth during 1980–4, but there was no difference in performance in 1975–9, or 1985–6. So unions do not necessarily reduce productivity growth. It is also unlikely that the above pattern can be explained by changes in union legislation. (2) Unionism appears to have no significant effect on in vestment, once one allows for the effects of differential productivity growth. (3) Wages in union and non‐union firms are equally responsive to changes in the capital–labour ratio. (4) Contrary to what is often alleged, unionism per se does not reduce employment growth. Instead, the negative correlation observed in 1980–4 probably arises from a significant reform of working practices in unionized firms during 1980–4.