What actually changes when a business converts a contractor to an employee in Ontario? Conversion is not just administrative. It moves the relationship into a completely different legal framework, with new entitlements for the worker and new obligations for the business.
It also does not erase any risk that built up during the contractor period. This article explains what changes on conversion, why past risk survives, what a new employment agreement needs, and the steps to convert properly.
Key Takeaways
- Converting a contractor to an employee changes the legal framework, not just the job title.
- Employment standards entitlements, payroll deductions, and usually WSIB coverage apply from the conversion date.
- Conversion does not eliminate risk from the contractor period if the person was misclassified.
- Time spent as a contractor may count toward notice entitlements if the person was really an employee or dependent contractor.
- The old contractor agreement cannot simply be relabelled. A new employment agreement is needed.
- The new agreement should be signed before the conversion date, or its terms may not be enforceable.
- Conversion is two tasks: setting up the employment relationship properly, and assessing past exposure.
Common Reasons to Convert a Contractor to an Employee
Conversion usually starts with a specific trigger, not a general sense that something should change.
Often, the working relationship has drifted. A contractor who started with real independence now works fixed hours, under daily supervision, as a fully integrated part of the team. That no longer looks like a genuine contractor arrangement.
Other times, the question is raised from outside. An accountant preparing year-end filings, an insurance renewal, a client audit, or a buyer's due diligence can all surface it.
Whatever the trigger, the underlying issue is usually the same. The relationship on paper no longer matches how it actually works, which is exactly what the CRA's test for contractors in Ontario looks at.
What Changes When Converting a Contractor to an Employee in Ontario

Once conversion takes effect, the individual moves from an independent business relationship into an employment relationship. This is a genuine change in legal framework, and the new obligations apply automatically.
New Employment Standards Entitlements
As an employee, the person becomes entitled to the minimum standards under the Employment Standards Act, 2000. These include vacation and vacation pay, public holiday pay, overtime pay where it applies, and notice of termination or termination pay.
None of these applied while the person was a genuine contractor.
New Employer Obligations: Payroll and WSIB
The business must now withhold and remit source deductions, including income tax, Canada Pension Plan contributions, and Employment Insurance premiums. The CRA's payroll deductions guide explains how this works. If the business does not already have a payroll program account with the CRA, it will need one.
If the business operates in an industry covered by WSIB, it will generally need to report the new employee and pay premiums for them.
These obligations apply from the date the relationship actually changes, not from whenever the paperwork catches up. A gap between the two creates avoidable exposure, such as a missed remittance deadline.
Why Past Misclassification Risk Survives Conversion

Conversion addresses the future. It does not resolve what happened before.
If the person was actually an employee during the contractor period, the business may still be liable for that period. The CRA can reassess it and seek unpaid CPP contributions, EI premiums, and income tax withholdings, along with penalties and interest. Employment standards entitlements for that period can also be claimed.
A business converting a role because it doubts the original classification is flagging the very issue an auditor would look for. Our article on contractor vs. employee misclassification in Ontario explains the wider consequences.
Assessing the Contractor Period
Assessing past exposure means reconstructing how the relationship actually worked, not just reading the original contractor agreement.
Emails, invoices, schedules, and project records can show whether the business directed the work, provided equipment, or treated the person as part of the internal team. This review is worth doing even if you do not expect to find a problem, since the CRA can look back several years once an audit begins.
Prior Service and Notice Entitlements
If the person was really an employee during the contractor period, that time may count toward their length of service. That matters because length of service affects ESA notice and severance entitlements, and common law reasonable notice.
Ontario courts also recognize dependent contractors. These are workers who are not employees but are economically dependent on one business, and they may be entitled to reasonable notice too. A long contractor relationship can therefore carry notice exposure into the new employment relationship.
The new employment agreement should deal with prior service clearly, rather than leaving it to be argued later.
Why You Need a New Employment Agreement, Not a Relabelled Contract

A contractor agreement is built around a contract for services. An employment agreement needs different provisions entirely. Relabelling the old agreement, without redrafting its substance, tends to produce a document that fails when it is needed.
Termination Clause
A termination clause written for a contractor relationship was never designed to meet the ESA. Once the person is an employee, it is very unlikely to work. Our article on termination clauses in Ontario employment contracts explains why so many clauses fail and what happens when they do.
Restrictive Covenants
Since October 25, 2021, employers in Ontario generally cannot enter into non-compete agreements with employees, unless the employee is a defined executive. A non-compete carried over into the new employment agreement will usually be void.
Non-solicitation and confidentiality clauses remain available, but should be redrafted for the employment relationship. Our article on non-compete agreements in Ontario explains what still works.
IP Ownership
Once the person is an employee, work they create in the course of their employment generally belongs to the employer. That change only applies going forward.
Work created during the contractor period is still governed by the contractor rules, so it needs a written IP assignment and moral rights waiver if one was never signed. Our article on who owns the IP when you use a contractor in Ontario explains why.
Compensation and Benefits
A contractor usually invoices a project fee or hourly rate, with no deductions withheld. An employment agreement needs to set out salary or wages, the pay period, and how statutory deductions apply.
Any benefits or vacation arrangements that were offered informally during the contractor period should be written into the agreement, so they line up with what the ESA requires.
How to Convert a Contractor to an Employee in Ontario

Converting properly involves two separate tasks: setting up the new employment relationship, and dealing with any exposure from the past. These steps cover both.
Step 1: Review How the Relationship Actually Worked
Look at the contractor period against the CRA's factors: control, tools, financial risk, and integration. This tells you whether there is likely to be past exposure.
Step 2: Decide How to Address Any Past Exposure
If the review suggests the person was really an employee, get advice on the options before the conversion goes ahead. These may include correcting past remittances or making a voluntary disclosure to the CRA.
Step 3: Draft a New Employment Agreement
Prepare a new agreement from scratch, with a compliant termination clause, appropriate restrictive covenants, IP terms, compensation, benefits, and a clear position on prior service.
Step 4: Sign the Agreement Before the Conversion Date
Have the agreement signed before the employment relationship begins. If the person signs after they have effectively started as an employee, the agreement may lack fresh consideration, and key terms, such as the termination clause, may not be enforceable.
Step 5: Set Up Payroll and WSIB
Register for a CRA payroll program account if needed, set up source deductions from the conversion date, and register the employee with WSIB if your industry is covered.
Step 6: Close Out the Contractor Arrangement
Formally end the contractor agreement, settle any final invoices, and make sure IP created during the contractor period has been assigned in writing.
When to Involve a Lawyer
The best time to involve a lawyer is before the conversion takes effect. That allows the past relationship to be reviewed, the new employment agreement to be drafted properly, and the agreement to be signed at the right time.
It is especially worth getting advice if the contractor relationship has lasted several years, if the person has been working much like an employee, or if they had a non-compete or created significant IP during the contractor period.
The Bottom Line on Converting a Contractor to an Employee in Ontario
Converting a contractor to an employee in Ontario changes the legal framework of the relationship. New employment standards entitlements, payroll obligations, and usually WSIB coverage apply from the conversion date.
Conversion only addresses the future. Any risk from the contractor period remains, and the old contractor agreement cannot simply be relabelled. A new employment agreement, signed before the conversion date, is the foundation of doing it properly.
If you are converting a contractor to an employee, our team at Levine Law can help. We can review the past relationship, draft an employment agreement that holds up, and help you deal with any exposure from the contractor period.
Frequently Asked Questions
Does converting a contractor to an employee erase risk from the contractor period?
No. Conversion only changes the relationship going forward. If the person was really an employee during the contractor period, the CRA can still reassess that period for unpaid CPP, EI, and income tax withholdings, plus penalties and interest. Employment standards claims for that period are also possible. The CRA's test for contractors in Ontario is a useful way to gauge how much past exposure exists.
What new obligations apply once a contractor becomes an employee?
The business must withhold and remit income tax, CPP contributions, and EI premiums, and usually register the employee with WSIB if the industry is covered. The employee also becomes entitled to minimum standards under the Employment Standards Act, 2000, including vacation pay, public holiday pay, overtime where applicable, and notice of termination. These obligations apply from the date the relationship actually changes.
Can the existing contractor agreement just be relabelled as an employment contract?
No. A contractor agreement is built for a contract for services, and its terms rarely work for employment. In particular, a contractor termination clause is very unlikely to meet the ESA. A new employment agreement should be drafted from scratch and signed before the conversion date. Our article on termination clauses in Ontario employment contracts explains why so many clauses fail.
Does time spent as a contractor count toward notice entitlements?
It can. If the person was really an employee during the contractor period, that time may count toward their length of service, which affects ESA and common law notice. Ontario courts also recognize dependent contractors, who may be entitled to reasonable notice even though they are not employees. The new employment agreement should address prior service clearly, rather than leaving it to be argued later.
What happens to a non-compete and IP ownership after conversion?
Once the person is an employee, a new non-compete will generally be void unless they are a defined executive. Non-solicitation and confidentiality clauses can still be used. For IP, work created as an employee generally belongs to the employer going forward, but work from the contractor period still needs a written assignment. Our article on who owns the IP when you use a contractor in Ontario explains why.
