This paper studies in the presence of flexible outsourcing the effects of outsourcing costs, productivity of outsourcing, wage tax and tax exemption in an imperfectly competitive labour markets when labour unions and firms negotiate wages and the impacts of labour tax progression on domestic...

Within an efficiency wage framework, we study the effects of two revenue-neutral tax reformsthat change the progressivity of the labour tax system. A revenue-neutral increase in both thewage tax and tax exemption and a revenue-neutral change in the composition of labourtaxation towards the tax...