The transition is for the mom and she is under the false pretense that the child will get "used" to daycare by visiting once a week for a month and not cry at drop offs, etc. Reality is the child will protest the changes (cry) but then learn to accept coming to daycare just as mom laments the end of mat leave but accepts going back to work and makes the best of it.

I would probably allow a couple visits but I do them first thing in the morning ie 7:30-8:30 as if it were a normal day and let mom stay but then they go home. Anything more the child stays alone and the parent pays accordingly for the time used.