One example, when our railroads were being built, workers lived in labor camps, that moved along with the rails. Migrant workers also set up camps that moved with them from job to job.Some fruit growers would build permanent labor camps, to house labor during picking season. And of course, the dreaded prison labor camps.
Detention facilities where those who are kept there are forced to do labor. The Nazi's did this with the Jewish people during WWII and there have been other facilities through out the world used for prison labor.