I have colleagues (in Europe) that actively run a second job in parallel (contracting). One was a programme manager in the country that I am (EU) and at the sa

I have colleagues (in Europe) that actively run a second job in parallel (contracting). One was a programme manager in the country that I am (EU) and at the same time was also running a programme in Saudi Arabia. He enjoyed the 'teleworking', and he had to go to the office 1 day per week and 1 day per month in Riyadh. The local 1d per week, was 4.30-5.00 on Fridays (yes it counted as normal day). For the Riyadh gig he would take a day off from the local job, and fly over on a Thursday evening, and return on Saturday. He was making LOADS of $, and when the locals pushed for 3 days, he just quit and kept the Saudi gig, as he wasn't able to be seen with two laptops in the office. If you know how to do your job well and fast you can pull it through with 10h per day (combined work). So, when the employers insist on getting people back in the office 2-3-4 days a week, I think they are on to something. I do not imply that 99% of people do this, but some/many do.