Worker misclassification is one of the most significant and underestimated risks facing companies that engage independent contractors internationally. When a worker is classified as an independent contractor but the nature of the working relationship resembles employment under local law, companies can face substantial penalties including back taxes, social contribution liabilities, fines, and in some jurisdictions, criminal charges against company officers. The challenge is that classification rules vary dramatically from country to country. In the United States, the IRS uses a multi-factor behavioral and financial control test. In the UK, the IR35 rules focus on whether the contractor operates as a genuine business. In Brazil, the presumption heavily favors employment status, and any ongoing exclusive relationship with a single client is likely to be reclassified. Many European countries apply strict tests around integration into the company's operations, exclusivity, and economic dependence. A contractor arrangement that is perfectly compliant in one country may constitute illegal misclassification in another. To minimize risk, companies should implement a systematic classification framework that evaluates every contractor engagement against the specific rules of the contractor's jurisdiction. Key factors to assess include the degree of control over how, when, and where work is performed; whether the contractor works exclusively for your company; who provides tools and equipment; how the contractor is integrated into your organizational structure; and whether the engagement has a defined scope and end date. Regular audits of existing contractor relationships are equally important, as working arrangements often evolve over time in ways that shift the classification risk profile.