Over the previous two decades, many OECD countries have lowered the degree of progressivity in their tax structures. In this paper, I investigate labour tax progression in a world characterised by a segmented labour market where the higher-paying jobs are rationed due to (i) oligopolistic market...

In oligopolistic industries, increased cost saving opportunities via offshoring have a moderating effect on trade unions. In order to discourage mobile firms from leaving the country, unions accept lower sector wages. In effect, the negotiated wage becomes independent of workers' bargaining...