That same year, he fled the Arbeidseinsatz and found refuge in the home of the Dutch painter and ceramic artist Willi Martinali in Deurne.
After the war, he returned to Gemert and had various jobs, including as a house servant, textile worker, clerk and assistant cooks.
He became a member of the General Catholic Artists Association and the Eindhoven club Cultural Contact, which was under the leadership of Jan Henselmans Louis Friday and French Babylon.
In 1956, together with Jan Kuhr, Jean Nies, and Piet van Hemme he founded the arts center "De Vrije Expressieven," which however would be short-lived.
From the mid-seventies, Jan van Gemert had a relation with textile artist Rick Boesewinkel (1931-1993), whom he married a few years before his death.