We had wages and price controls in Canada in the 1970's. I worked at a steel plant and wages were frozen. The penalties for workers, unions and others who disregarded the freeze were 10 thousand dollar fines and up to five years imprisonment. There were other penalties for others, I think management, of a monetary sum up to 10 years imprisonment.
The department stores were allowed a mandatory 10% increase in certain goods. Indignant shoppers compared old packets with new ones and found often the prices had risen. Beryl Plumptre the bureaucrat in charge, said each complaint could be brought before certain authorities. One at a time.
Some department stores had over 5000 separate items listed. There was no way anyone could check in a comprehensive manner. Hardly worth anyones time to complain. The workers who got say $5.50 cents an hour, were joyfully kept at that rate by the management.
After a year they got rid of the controls, I believe. Plumptre had to put a lock on her garbage can. Jokers had been into it,curious about her life style. She did not suffer, of course
I checked and found that the wages and price control act in Canada took place between 1975 and 1978. In some cases, a slight increase in wages was allowed yearly. Employers were only to happy to enforce no raises, as their patriotic duty.
The control of food stuffs and consumer goods was virtually impossible. There were not computers and the immense volume of every day commerce went on. It became a nightmare- at least as I remember.