Comité de défense des ouvriers
As a consequence of his signing, in 1975, of the letter of 59, practically all of Ficowski's writings had become banned in Poland for the remainder of the decade, and only the emergence of Solidarity in the early 1980s has brought his works back to Poland's bookshelves. Both his prose and poems continued to be widely translated in the West. He was active in the opposition movement, and was a member of the Workers' Defence Committee (Komitet Obrony Robotników, KOR) and subsequently of the Committee for Social Self-defence KOR.