Canada has no single statute called a consulting law. The agreement rests on the common law of contract in the nine common-law provinces and the territories, and on the Civil Code of Québec in Quebec, which means a national business often needs to confirm which law governs before it signs. Offer, acceptance, consideration and an intention to create legal relations are the bones of any enforceable agreement, and a written consulting contract supplies the evidence of all four. Electronic signatures are valid for this kind of commercial dealing under PIPEDA and the provincial electronic commerce statutes, so a signed PDF binds the parties as firmly as ink on paper.
The defining legal question is worker classification, and here the case law is settled. In 671122 Ontario Ltd. v. Sagaz Industries Canada Inc., 2001 SCC 59, the Supreme Court of Canada held that the central inquiry is whether the person is performing the services as a person in business on their own account. Courts and the CRA weigh the factors from Wiebe Door Services Ltd. v. MNR: the degree of control, who owns the tools, the chance of profit and risk of loss, and the integration of the worker into the client's business. A label in the contract carries weight only if the day-to-day reality matches it. The government tightened this further through Budget 2024, which strengthened the prohibitions against employee misclassification under the Canada Labour Code, so a misdrafted or misapplied agreement now carries sharper consequences than it did a few years ago. You can read the federal position on this directly in the Canada Revenue Agency guidance on employee versus self-employed status.
Intellectual property deserves its own line of caution because Canada departs sharply from American practice. Under the Copyright Act, R.S.C. 1985, c. C-42, the author of a work is the first owner, and there is no Canadian equivalent of the United States "work made for hire" doctrine for contractors. A clause that merely calls the deliverables "work for hire" transfers nothing. Ownership passes to the client only through a written assignment, and because moral rights cannot be assigned, the consultant must also waive them in writing.