You don’t have to be an old hand at data analysis to see what’s going on in this chart of Americans holding multiple jobs, from the St. Louis Federal Reserve:

From 1994 through 2020, the number oscillated around approximately 250,000 to 300,000.  Now we’re rapidly approaching 500,000.

One conclusion about which I’d speculate, given other economic numbers and current political debate, is that America is splitting into a society with one segment that works twice as hard to support the other side, which works half as much… or not at all.