A physicist by profession,[1] Wujec was an activist in the Solidarity movement of the 1980s.[5] In 1984, he was imprisoned at Białołęka for his political activities.[1]
Wujec was Secretary of State in the Ministry of Agriculture and Rural Development in the government of Jerzy Buzek in 1999-2000. He acted as an advisor to Bronisław Komorowski when the latter became President of Poland in 2010.[3]