I suspect it is only "necessary" to have dual incomes if you want to live high on the hog (as most people do today). Go back to how people lived on a single income 50 years ago: no air conditioning (CAR or home), hang the laundry out on the line to dry, "eating out" was a once a week as a special treat, a single car per family and I know my dad spent the weekend working on it so that it would be able to take him to work the next week, a single b/w TV in the house, no expensive electronic games and toys, no $100 sneakers or $80 bluejeans, etc. Even people "living in poverty" are living better today than a stable single wager earner family 50 years ago.
Actually I remember my dad working a full time job plus part time, plus going to night school to learn welding so as to get a better job.
I am sure that they WILL be making a competitive wage or else Kubota won't get people to apply for the job. "Competitive wage" will be met or people will go to other, better paying jobs. No other better paying jobs? Well, then it's a competitive wage. Actually I suspect Kubota will be paying slightly above the local competitive wages.
Ken