Pennsylvania has passed laws in 6 of these 10 areas. But let us examine the scope of these laws in more detail. California and 29 other States have mandatory laws or regulations which apply to all labor camps or specifically to camps for migrant farmworkers. A 1963 California law declares that there is a need for farm labor centers to help assure a supply of agricultural workers when they are needed and gives local housing authorities the power to acquire and operate farm labor centers for housing persons engaged in agricultural work. Workers whose principal source of income is from farm work are eligible to rent housing in these centers.