Are you implying that people somehow don't need to work in communist countries? I was too young to work during USSR times, but I can assure you my parents and grandparents hated Mondays as much as my generation do, if not more.
There's work that you do for yourself and to benefit yourself and your community, but this kind of work is the kind which doesn't benefit you, only your boss. In the case of the USSR, your boss was the state, hence why the USSR's economy is often referred to as "state capitalism".
Arguments against your theory:
1. Inefficiencies of labor distribution / shortages in USSR.
2. There were bosses in the USSR, called party members. Someone needs to manage.
3. Decreased motivation for high performance due to smaller "CEO"/common laborer wage gaps.
4. Inability of USSR to compete in both consumer goods and other areas except in a few focus points (mainly military) such as - small scale nuclear, rocket propulsion, certain areas of medicine, certain sports (far more actual research done than in the US), cavitating torpedoes, stealth subs, IR seekers, thermobarics, fighter wing leading edge vacuum generation from the SU27 copied in the F-15/MIG29, VTOL lift, etc
