Working at the company of the husband without labour contract

Hello,

I’m in Abu Dhabi under my husband’s sponsorship. He has his own company in the UAE. I’m officially part of my husband's company as the CCO, it’s mentioned on the website and on social media.

However, we never made an employment contract and I don’t receive a fixed salary. Can I face any trouble for working illegally in the UAE or would this arrangement be considered legal?

Thank you!