I think you could do almost anything for a day. One day is "Here's Jim, he's new, and we are going to show him how we do things here" stuff where little actual work happens.
A month would be a more realistic situation. I wouldn't want to be military in an active war zone, work for a drug/trafficking cartel, or any other dangerous profession where the likelihood of dying or going to prison is high. Or professions where I'd have to actively harm people.
What a nonsense article. Shareholders have never motivated workers in any way, so this is like saying, "Water is wet." Then they quote some Tiktok crap?
Companies catering to shareholder whims and the demand for perpetual share value growth are the reasons why many companies go to shit when eventually that growth comes from layoffs, worse work conditions etc.
Pay your workers fair wages, offer a good work/life balance and keep them happy to work for you and they will go above and beyond.