How do I get him to understand that working from home is actual work?

This is silly. But all insights would be welcome. I work from home on occasion and when I do my husband asks me to do things around the house. Nothing big (sweep the floor, fold laundry, empty the dishwasher), but I feel put out.

The other thing is, and this is even sillier, is that when he comes home (at 4:00 PM) he wants to kiss me and tell me about his day and I'm still working.

I'm happy to kiss him when he comes home, and the other things after 5:00 PM when I'm done working. But he doesn't seem to understand that just because I'm home doesn't mean I'm available.

I love my husband dearly and this is certainly not a deal breaker by any means, but it is annoying.

Thoughts?