in the construction I saw, there were several big groups of electricians.. a) ratty, self-employed often with serious baggage or obvious deficits.. can be paid well or very badly.. insurance is a problem; b) big company that hires and fires frequently.. wears a uniform, clean tools and trucks.. do not expect anything different than the work order, and sometimes a pawn in some kind of low-ethics moves between developers and service company; c) career, union electricians.. involved in very large, slow moving, multi-part works.. by the book, can do industrial installation in large teams; all manner of insurance, and also health care and retirement benefits. Modern times? probably add non-English speaking versions of (a) and (b). The pay varies quite a lot between those situations.