I've worked with two archaeologists. They're more employable than you think. Both of them were at drilling sites I was working. Not that kind of drilling, we often dig small (< 6 inches in diameter) holes in the ground to see what's going on in the subsurface for a variety of reasons. In this case both were there for planned underground utilities (water and sewer).

Anyway we were legally required to have an archaeologist at these two sites just in case we encountered artefactsand they sifted through the top 10 feet of our hole. It's fairly common in some areas and the archaeologists worked for private consulting firms.