As I understand it an infant may stay sleeping where he is if it is considered a "safe environment." As it has been my experience with infants they frequently go to sleep on the floor or in play swings that are both approved play spaces according to these rules. If a caregiver only has to check on the infant every 20 minutes, which is not logical for a baby on the floor, then that baby could easily get stepped on. I realize that this is an extreme example, but if it happened then someone could say, "well I was just following the rules."
