Look at the chart that this story is about: when things go negative, what do you think happened to people's employment opportunities? What do you think happened to their debts (deflation makes it worse)?
Do you want to perhaps look at the economic historical record of the ~80 years before 1945:
* https://en.wikipedia.org/wiki/Panic_of_1910–1911
* https://en.wikipedia.org/wiki/Panic_of_1901
* https://en.wikipedia.org/wiki/Panic_of_1896
* https://en.wikipedia.org/wiki/Panic_of_1896
* https://en.wikipedia.org/wiki/Panic_of_1893
* https://en.wikipedia.org/wiki/Panic_of_1873
There have not been as near as many widespread economic collapses post-WW2 as there were pre-WW2. 2008 is probably the only one that came even close.
The main contributor to the working class getting a raw deal since the ~1970s is (IMHO) the idea of shareholder value (primacy):
I'd still like to know according to who. Practically everyone agrees the economy is worsening for average people during many decades of nearly universal control by "mainstream" economists, advisors and bureaucrats.