[pkrotich]

Not when it’s at-will employment. You don’t need a reason to fire anyone in most states in US. Only exceptions are protected things like because of gender or race etc - but that is even blurry to prove it.

Unions are the only protection but companies do everything to burst unions e.g Starbucks and Amazon.

[theGnuMe]

In the US at the Federal level the IRS and DOL have specific tests for contractor vs employee. If you hire contractors that are really employees they will come after you for misclassification. This is independent of State laws.