Is it legal to install Office 365 Home on a work PC?

Question

Microsoft

There is a subscription to Office 365 Home on 5 PCs or Macs, not all 5 have been used. A licensed Office 2010 Retail is installed on the working PC (a little buggy from time to time), but I would like to install my 2013 to always have access to my cloud, and it works faster and more stable. The employer is not going to switch to Office 365 yet, and it's not very comfortable to work in 2010, especially with Outlook, the work is very unstable. And I have a free vacancy for 1 PC / Mac. So I wondered if such actions would be legal? Or in this case, I still have to buy Office 365 for business. Then maybe I should have the status of a Legal Entity? Or if I do not have the status of a legal entity, then I am free to dispose of my license as I want?