teachma, my ds1 is EXACTLY the same way. He literally follows me ALL over the house. He can be happily playing (in the same room as I), but the minute I get up to throw a load of laundry in the dryer, lay the baby down, go to the bathroom, whatever--he must follow me. I don't mind somewhat, but he frequently whines while I'm trying to do what I'm doing. Also, I don't mind including him in some of the household chores, but I don't have time to let him help with everything and frankly, it's nice just to think my own thoughts while I'm doing dishes, kwim? I have wondered so often if all kids are like this, and I've come to the conclusion that while they all are to some extent, my ds is on the extreme end of this particular spectrum.
I don't really have any advice, but I do understand.
Oh and btw, I'm a SAHM and have almost never been without ds, so I don't think it's just the fact that you work. It's probably just your ds's personality.
~lisa~mama to 3 boys (1/02, 5/04, 12/06)