Converting a Contractor to an Employee in Ontario: The Legal Steps

Bringing a long-time independent contractor onto the payroll as an employee is a good problem to have — it usually means the relationship is working. But the transition is a genuine legal and administrative change, not just a new job title. Converting a contractor to an employee touches the written agreement, your payroll obligations, and how the worker's past service is treated.

Skipping steps here can create confusion later — about vacation entitlement, about what happens if the employment ends, and about whether the old contractor agreement is still doing anything at all. Here is a practical walk-through of what an Ontario business should address.

Why This Transition Needs More Than a New Title

An independent contractor relationship and an employment relationship are governed by different rules. A contractor typically invoices and pays their own HST, is not covered by the Employment Standards Act, 2000, and is usually responsible for their own source deductions. An employee is covered by the ESA, has statutory notice and vacation entitlements, and requires the employer to withhold and remit source deductions.

Simply changing what you call the person, without addressing any of this, leaves gaps that tend to surface later — often at the worst possible time, such as when the employment ends.

Step 1: Decide What the New Relationship Looks Like

Before drafting anything, confirm the practical details: salary or hourly wage, hours of work, reporting structure, benefits (if any), and start date for the new arrangement. This is also the moment to think about whether any past contractor work should be recognized as service for benefit or vacation purposes, since that decision should be made deliberately, not left ambiguous.

Step 2: Put a Proper Employment Agreement in Writing

A new employment agreement should be drafted for the employment relationship — it should not simply be the old contractor agreement with the word "employee" swapped in. Key terms include compensation, termination provisions, confidentiality and intellectual property obligations going forward, and any post-employment restrictions the business wants to rely on.

Termination language deserves particular care: a clause that tries to contract below the ESA's minimum notice and severance entitlements is generally void, and Ontario courts have struck down many termination clauses over technical wording issues. This is not a section to draft from a generic template.

Step 3: Update Your Payroll and Statutory Registrations

Once someone becomes an employee, the business takes on obligations it did not have as a client of a contractor, including:

• Withholding and remitting source deductions (income tax, CPP, EI) from every pay.
• Registering the worker for WSIB coverage, if the business is not already registered.
• Including the new employee's payroll in your Employer Health Tax calculations.
• Issuing pay stubs and a Record of Employment when the employment eventually ends, as required.

Step 4: Address Vacation, Benefits, and Recognized Service

Decide — and put in writing — whether the employee's start date for vacation, probationary purposes, and any benefit eligibility runs from the new employment start date or recognizes some or all of the prior contractor period. Ambiguity here is a common source of later disputes, particularly if the employment ends and the length of service affects notice calculations.

Step 5: Handle the Old Contractor Agreement Properly

The contractor agreement should be formally wound down — invoiced work completed and paid out, any ongoing obligations (like confidentiality) either carried into the new employment agreement or expressly preserved, and the contractor relationship clearly ended rather than left to fade out informally. This avoids ambiguity about which agreement governs if a dispute arises.

Step 6: Confirm the Practical Onboarding Details

Treat the new employee like any other new hire from a compliance standpoint: confirm eligibility to work in Canada if not already on file, register for any group benefits or retirement programs the business offers, and make sure the employee receives the same onboarding information — policies, health and safety orientation, and so on — as anyone else joining the team.

Frequently asked questions