Happy Labor Day
@AxeAkane Literally impossible, according to this chart. Reagan's first term didn't start until 1981, but union membership starts declining in the mid-'60s, and the decoupling of wages from productivity starts about a decade before Reagan.
The Reaganites massively accelerated all this and did much more damage, but they didn't start it. I'd really like to know the full story, especially what happened in the early '70s -- exactly what, when, who, and why.
@chocobo13 Someone else brought up the so-called "Nixon Shock", which would both help explain this and is almost exactly timed right. So I think that's it.