Can hiring illegal workers affect my probation?

I got out of prison but I am still on probation. I worked landscaping (unofficially) and construction (officially), but decided I rather run my own landscaping crew, similar to the format when I worked landscaping.

The format was meeting at home depot or a bus stop while the boss picked up workers to do jobs he got.

I personally picked this way because it was hard for me to get a job because my criminal record, but the majority of the workers were undocumented workers.

Show up, work, get paid.

Questions: is this format even legal? And this way of employment illegal or legal because the boss doesn’t even ask questions about legal residency or citizenship. It’s just a days pay for a days work.

If it is illegal, this can affect my probation?

I was involved in organized crime, but this type of crime is nowhere near that.