 He was admitted to the membership of the Communist Party of Yugoslavia (CPY).Two years later he was sent to party work at Karaburma where he formed a party organization in the textile factory Vlade Ilic and was elected secretary of the meat sports club "Belgrade".In 1935, during the break-up of a party organization in the country, Karaburma organization was also discovered, and Filip Bajkovic was arrested and sentenced to one year of strict imprisonment, which he spent in Sremska Mitrovica and Nis .