It's not steady work, and doesn't have benefits unless the job has changed. Your like a private contractor.Plumbing and electrical is something I have thought about. Anyone in here a real estate appraiser i have heard good things about that profession.
I'd look at an hourly or salaried job for benefits and the investment opportunities through the 401K program.
I told the young guys I worked with at the power plant to invest heavily in the 401K and they would be millionaires when they retired.
Vett every companies 401K before agreeing to work for them. Some do not contribute matching funds, some contribute matching up to a certain percentage of your contributions.
OG&E basically matched 11% of our wages when I worked there. Been retired for over 3 years now, so it could have changed, but I'd bet not. They are hungry for talented, educated folks. Benefits including vacation and medical start day one.