Nanny cam!

I am starting to work for a family who have a toddle 18-months-old. The parents have pointed out that the home is monitored by cameras. Although technically this is not a horrid thing for me; you can avoid all sorts of drama if you are being watched. My question is that, ok, the baby is 18 months old and we will play etc...what about the non-active times, like if he is playing by himself and not interacting with me. I would not like to be "caught" being idle..I mean if I am just watching him play at times. This is a 10 hour job so he will not be out of my sight unless he is napping. And when he is napping...?? What do I do? I will be on the camera....