During the 1950s and ‘60s Ficowski collaborated with many literary journals such as Twórczość (Creative Output), Nowa Kultura (New Culture), Współczesność (Modernity) and magazines for children such Płomyczek (Little Flame) and Płomyk (Flame). In 1956 he was awarded the Gold Cross of Merit.
After witnessing the horrors of World War II, Ficowski was involved with attempts to save Jewish culture from being forgotten. He wrote a narrative poem entitled List Do Marka Chagalla (Letter for Marc Chagall) published in 1957. Ficowski was enamoured with Bruno Schulz’s Sklepy Cynamonowe (The Street of Crocodiles), which he read during World War II. When he learned about the tragic death of Schulz, Ficowski decided to commemorate him by researching his art. In 1967, Ficowski wrote the definitive biography of him, entitled Regions of the Great Heresy. In 1968 Jerzy Ficowski married again, this time fellow writer Elżbieta Bussold. Two years later he became a member of Polish Pen Club, and was part of its directorate from 1972. In December of 1975 Ficowski signed the famous Memoriał 59 (Memorandum of 59), a letter signed by Polish intellectuals who protested against the changes of the Polish constitution. It was the beginning of his involvement with the anti-communist opposition.
From then on his writings weren’t officially published until the 1980s. In 1977, the PEN Club gave the writer an award for his works as a translator. Starting in 1977, Ficowski was published in the underground publishing house Zapis (Record). He became a member of the Workers’ Defence Committee in 1978, and was also involved in protests and demonstrations in Radom. In 1979 he published a collection of poems entitled Gryps in the underground NOWA publishing house.