What are 3 reasons parents might need substitute care?

the parents might be full time workers and live pay check to pay check and dont have the time to watch their kids depending on the hours, i know some parents with 15 hour work shifts and they have babysitters for their kids sports, and activities and just helping around the house and feeding the kids when they work, they are probably away on business and need someone to care for the kids, maybe its a single parent and they work too much and they need some help, maybe the parent is disabled and needs a helping hand. hope this helped!