Are dead people unhappy?

I have quite a few dead bodies littered around the place. I am aware that for people forced to work next to them, it has a severely detrimental effect on their happiness. However, do the corpses' happiness affect overall happiness? If I revive someone (and they come to life with 0% happiness), will that make my overall happiness go down?

I'm concerned because I have a review coming up.

Solution 1:

No, they won't have 0% happiness. For me, some of them have around the same percent they had before dying and other seem to have 50% but they get higher really fast.

In any case, leaving them dead won't help you at all for the review because the people around will actually become to have 0% happiness (or close to 0%) and this is much worse, especially for a room full of people. If you are concerned for the dead people, just revive them and have them get laid :) Raises morale immediately!