Zbigniew Kowalewski was in 1980-81 a member of the regional leadership of Solidarnosç in Lodz. As a delegate to the First Congress of Soldarnosç, he took part in the elaboration of the programme that was adopted. He was in Paris at the invitation of French trade unionists when the state of siege was declared in December 1981. He helped to edit Polish-language Inprekor, a journal of the Fourth International circulated clandestinely in Poland from 1981 to 1990, and published “Rendez-nous nos usines!” (“Give us Back our Factories!)” (La Brèche, Paris 1985). He is at present editor of the trade union weekly Nowy Tygodnik Popularny and of the theoretical journal Rewolucja.