Using panel data for nearly all service providers in a single industry sector, we examine productivity responses to changes in competition in the United States. The sector offers workplace employee representation through trade union branches which compete with one another for union members whose...

Using matched employer-employee data for Britain, we examine ethnic wage differentials among full-time employees. We find substantial ethnic segregation across workplaces: around three-fifths of workplaces in Britain employ no ethnic minority workers. However, this workplace segregation does not...