The employment effects of an ecological tax reform depend decisively on the presence of a profit tax and on the extent to which profits are taxed. This is shown in a model where firms have monopoly power on product markets and bargain over wages with unions on the labor market. In this setting,...

This paper analyses optimal taxation with an imperfect labor market. Unemployment results from the market power of a monopoly union that determines the wage unilaterally. The government provides a public good and raises revenue by taxing rent, labor and capital income. Labor is immobile while...