Q455: Is there a minimum legal age to be a babysitter?
No there is no minimum legal age to be a babysitter. It is the responsibility of the parents to use common sense when making a decision regarding the welfare of their child. In all situations, parents should assess the suitability of the babysitter before you leave any children in their care.
It is worth bearing in mind, that a child under 16 years old cannot be prosecuted for neglect or ill treatment of children in their care. The parents/carers/guardians would be charged in that situation. However, any person who is aged 16 or over and who has responsibility for a child under that age could be prosecuted.