Canada has no single statute governing independent contractors. The relationship is built on common law principles, supplemented by federal tax legislation and, for genuine contractors, the deliberate absence of provincial employment standards protection. Outside Quebec, which applies its own Civil Code test, worker status everywhere in the country is decided by the courts and the CRA using the same body of case law.
The controlling authority is Wiebe Door Services Ltd. v. MNR, the Federal Court of Appeal decision that set the multi-factor test still used today. Courts and the CRA now apply a two-step approach: first they examine what the parties intended and what the written contract says, then they test that intention against the objective reality of the working relationship. The factors weighed include the degree of control the payer exercises, who owns the tools and equipment, the worker's chance of profit and risk of loss, and how integrated the worker is into the business. No single factor decides the question, and a contract that calls someone a contractor will be ignored if the day-to-day facts describe an employee.
Tax obligations flow directly from this classification. A genuine contractor is responsible for their own income tax, must register for and charge GST/HST once they cross the small-supplier threshold, and pays both halves of Canada Pension Plan contributions through self-employment. The payer issues a T4A rather than a T4 and makes no source deductions. Misclassification is where the real money is lost: if the CRA finds an employment relationship, it can assess the payer for years of unremitted CPP and EI, plus penalties and interest. Intellectual property is governed by the Copyright Act, where the default rule under section 13(1) makes the contractor, not the paying client, the first owner of copyright in the work they create. You can read the federal Copyright Act provisions on first ownership and assignment directly on the Justice Laws website. Without a written assignment, the client gets only an implied licence to use the deliverable, never ownership.