The preceding chapter summarized the main features of low-wage work across our six countries. In this chapter and the next, we explain the main institutional determinants of the size and structure of low-wage work, focusing on the national institutions involved in setting pay. The overall incidence of low pay in the six countries and the results of the case studies suggest that pay-setting institutions play a central role in explaining international differences in low-wage work. By "pay-setting institutions" we mean the formal and sometimes informal mechanisms used to determine the wages (and benefits) received by workers in different industries and occupations within each country. More specifically, we mean collective bargaining arrangemen...