The Pebbles and Bamm-Bamm Show (1971)

Season 1: Episode 14

Pebbles is voted Honorary Mayor of Bedrock during student week so the Mayor goes on vacation, leaving Pebbles in charge. Wanting to improve the city, Pebbles switches the duties of the city departments. Disaster ensues and the city workers all quit. The gang and their parents take over and run the city while Pebbles tries to get the workers back by throwing a picnic.