why people taking up jobs like that? Cause maybe if business is good, the earnings will be good since pay per point is higher.

Cause it's better than working as floor measuring expert (jobless) at home? Cause it's better than working as floor sweeper? Better than working as pyramid scheme conning people? working as construction worker?

Cause in the end of the day, that's a proven salary scheme for hotel owners and at least it is transparent and no hanky panky fraud scheme.