Tied housing has advantages as well as disadvantages. In a job like farm worker in a rural area with poor public transport and odd hours, workers at hand are necessary. But then someone has a problem if a worker dies or retires. Either the farmer because he has nowhere to house his new worker, or the retiree or widow.
Vicars too, move around the country, and the vicarage is often partly used for church business.

I suppose more workers have cars than in my young days, so not so necessary to be near, but livestock needs attention early & late & in emergencies.