There is a nationwide trucker shortage. I have heard radio adds for over a year offering signing bonuses for CDL drivers and diesel mechanics. The latest was Waste Management. It is really going to affect school bus companies because they can not afford to pay as much as other transportation companies. The biggest problem for the trucking companies is that a large percentage of potential CDL drivers can not pass a drug test.
That's the biggest problem in hiring people for damn near anything.
IIRC, the local school district is offering to pay school bus drivers $13/hour. Then they wonder why they can’t find anyone to hire.
I could and would drive a garbage truck, but they’d have to pay me more than they are willing. Supply and demand.