Using low-cost Windows licenses at work, any risks?

I’ve been buying Windows licenses as an individual from WindowsKey.eu for a while now, mainly because the prices are much lower compared to buying directly from Microsoft. So far, everything has worked fine on my personal devices.

Now I’m in a bit of a dilemma. At work, we don’t really have the budget to purchase licenses directly from Microsoft at full price, and I was wondering if it would be acceptable (legally and practically) to buy licenses from sites like this for company use as well.

From what I understand, some of these keys are resold under EU laws, but I’m not entirely sure how that applies in a business context vs personal use. I don’t want to put the company at risk with compliance or licensing issues.

Has anyone here used these types of licenses in a company environment? Is it actually safe/legal for business use, or should it be avoided?