2 possible explanations:
1. The numbers we are looking at are from July. The State really reopened in June. Many professional services required for closing on houses were not really running until then so Attorneys could not do title searches, hold closings, etc. So even if that place for sale was instantly under contract places were not closing until July. Then you need to get in, figure out what changes are to be done, get contractors etc- so there is a time line. Thus the huge explosion recently in construction material costs. Lets see where those construction employment figures are come September.
2. Vermont may not put electricians, plumbers under the construction category but as other professional services. It could be an accounting issue.
Also:
Fewer kids are going into trades up here. For instance when we first moved to the St. Johnsbury area, the St J Academy had a thriving electrical program with two full time teachers. We had a class of kids come out and do wiring projects at our house. Within 2 years, one of the teachers were gone and the program was hanging on by a thread due to lack of student interest despite the opportunities that are out there in the area for good reliable electricians, plumbers, etc.