[rendaw]

I'm a contractor because I work remotely for a foreign company, and they denied me paid holidays with this argument. The cost of vacation is proportional to worked hours. There's a lot of questionable math in HR land though.

I could see maybe the argument against this because of paid accounts in remote systems: google suite, office 365, bamboo, github, etc. compared to reduced use, but they set those up anyway for other people in the company who don't use them (non-devs, etc) and I don't believe the cost per user is significant.

Do you mean tax costs? AFAIK typically country requirements for benefits are proportional to time worked, so part timers don't get all the benefits. Which benefits are you talking about specifically?