They have jobs (the thing they were programmed for) and a social life, similar to us. It was depicted in the series Tron: Uprising.
The main character, Beck, works at a garage repairing vehicles (like the bikes we all know so well, among others), along with his friends Mara and Zed. They often hang out at the 0001001 Club after work.
When General Tesler tries to take over Argon City for Clu, Beck starts a double life, where he has to keep up appearances at work and with his friends while trying to stop Tesler's plans. He is aided by a damaged Tron, who is impressed with Beck being able to overcome his programming as a mechanic to become a terrorist known as the Renegade.