Its important to know that McDonalds in other countries still schedules 10+ workers at a time. The wages are just too expensive in the US to justify that kind of schedule but in countries like the Philippines, where the average livable wage is $20 USD a day, it makes sense to hire 10+ workers for a single shift.

Just for comparison, the average meal price at McDonalds in the Philippines (Big Mac meal with small fries and a drink) is around $4 USD.