Working?

I thought it would be nice to work after retirement.  Not a lot,  just 15-20 hours a week. Lots of places to make a little extra spending money. I could live with the income restrictions from social security,  but since my wife is still on OBama Care, anything I make increases the cost of her insurance... too the point where I'd be working for less than half of what I'd earn between income taxes and the increased OBama Care premiums. Go figure.