The WPA reached its peak employment of 3,334,594 people in November 1938. To be eligible for WPA employment, an individual had to be an American citizen, 18 or older, able-bodied, unemployed, and certified as in need by a local public relief agency approved by the WPA. The WPA Division of Employment selected the worker's placement to WPA projects based on previous experience or training. Worker pay was based on three factors: the region of the country, the degree of urbanization, and the individual's skill. It varied from $19 per month to $94 per month, with the average wage being about $52.50—$ in present-day terms. The goal was to pay the local prevailing wage, but limit the hours of work to 8 hours a day or 40 hours a week; the stated minimum being 30 hours a week, or 120 hours a month.