http://www.multpl.com/unemployment/table
A recession is coming soon. Prolonged low unemployment rates are a pretty reliable sign that the economy is overheating. So are pricy Forward P/E ratios. So are property bubbles.
https://www.economist.com/blogs/graphicdetail/2016/08/daily-...
Also, I disagree that we have a labor shortage. I think we have a skill shortage. If we had double the machine learning experts we might need half the number of commercial drivers, and there are a lot more drivers out there than AI developers.