Reasonable speculation, but if you look into it you'll see that right now the most popular hypothesis is a lack of fit between job seeking and hiring. Warehouse

Reasonable speculation, but if you look into it you'll see that right now the most popular hypothesis is a lack of fit between job seeking and hiring. Warehouse jobs for example are taking a lot of workers away from other industries right now. The most convincing piece of evidence for this IMO is that if you compare the states that ended relief funds and bonus unemployment early to try to combat this issue with those that let it keep going, there was no statistically significant difference between the two halves of the USA in terms of hiring shortages.