A few years ago, the last time I tried 'working' was to try launching a freelance editing service. My first client was someone who wanted me to 'proofread only' (funny, that) an impossibly badly written memoir.
He ended up enraged. And I worked, as it happened for about $3.15 per hour. He had sent a sample of a few paragraphs that were well written--the only ones that were. My forearms, hands, and upper body certainly didn't tolerate the work, and my use of pain meds escalated, which meant no, I couldn't do this type of work for the hours it required.
Recently I did volunteer to research for a relative whether Chinese-made KN95 masks could be sold to US healthcare providers. It was exciting (new! and newsworthy!) and totally exhausting. In a word, no, everyone and their uncle in China were manufacturing masks of dubious quality and you could be prosecuted for fraud in selling them here in the US.
Since having to quit my nursing job in 1999, I tried 3 other healthcare jobs, including one as a clinical research coordinator. I tried going back to school to become a nurse practitioner. I went through our state's vocational rehab program and tried bookkeeping.
All of these I couldn't do; my body was in the midst of a scream of pain all the time; I was so angry and exhausted at having to struggle until I gave up, or in.
I think an hour a day, in small chunks is my current limit.