Just because the contract you have workers sign is titled “Independent Contractor Agreement” doesn’t mean they’re actually contractors. Both federal and state governments can decide you have employees instead…and owe back taxes and penalties for not treating the relationship as one of employment.
If you’re not sure whether your workers should be classified as employees or independent contractors, it’s time to consult with an experienced business lawyer who can both advise you and prepare the right type of contracts to protect you and your company.