In its 1998 final report, the German Co-determination Commission identified a large and growing sector of the economy in which employees are covered neither by participation on company boards nor through the vehicle of works councils. The Commission argued that the steady erosion of...

Using a large panel data set we investigate whether works councils act as sand or grease in the operation of German firms. Stochastic production frontier analysis indicates that establishments with and without a works council do not exhibit significant differences in efficiency.