How can we reconcile social struggle and environmental struggle? This question poses problems for trade unionists. To avoid a climate catastrophe, it would be necessary to reduce economic activity, to suppress useless or harmful production, to give up a substantial part of the means of transport ... But what would happen to employment then? How can we avoid a surge of unemployment, a new rise of poverty and precariousness? In today’s relationship of forces, in the face of financialized and globalized capitalism, these challenges seem impossible to meet ...