Tens of millions or even hundreds of millions of people were unemployed in the Great Depression. When the stock market crashed, failure of government policies, bank failures, the collapse of money supply, and the collapse of world trade due to the Smoot-Hawley Tariff in 1929 and the 1930s, many people in the world in the Great Depression are unemployed and/or losing their jobs. When the Great Depression ended in 1939 probably because of the world war, employment rate started going up again, and the economy was stable.
But starting in 2020, the Covid-19 pandemic, people lost their jobs, the unemployment rate started going up again, when the Covid-19 lockdowns and restrictions ended, the economy started growing, and many people got employed again.