They weren't necessary sent to work camps. Some were just fired and couldn't get hired. Later, in 1950's & 60's, you would be effectively banned from career. Sometimes librarians would paint black their name if they were in references section. Since 1960's victims of these political battles could go to other institutions, probably at less important position.

This practice continued all the way till the collapse of the USSR, I heard of such stories in Moscow universities, and in the Academy of Science.