The connections that Šik made at Mauthausen proved useful in his post-war political career. In the early 1960s he attempted to persuade the hardline president, Novotný, into loosening his rigid adherence to central planning, which had been crippling the economy. Šik, who by this point was an economics professor and member of the Communist party, wanted to bring market elements into central planning, to relax price controls and to promote private enterprise in the hope of kick-starting the stagnant economic climate. It was around this point that Šik was elected to the party's central committee and was made head of the economics institute at the Czech Academy of Sciences.