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Employee vs. Contractor: What's the Difference and Why It Matters

How Canada classifies employees vs. contractors, what the CRA looks for, and why misclassification is one of the costliest payroll mistakes.

How you classify the people who work for you — employee or contractor — determines your legal obligations, your tax exposure, and theirs. Getting this wrong is one of the most common and costly payroll mistakes in Canada.

The Core Difference

 

Employee

Contractor (Self-Employed)

Source deductions

You withhold and remit CPP, EI, and income tax

None — they handle their own taxes

EI premiums

You pay employer's share (1.4x employee's)

No EI (unless they opt in)

CPP contributions

You match the employee's contribution

They pay both sides themselves

T-slip at year-end

T4 slip

T4A slip (if over $500 in payments)

Benefits and entitlements

Vacation pay, minimum wage, statutory holidays (per provincial employment standards)

None — governed by contract, not employment law

Work expenses

Deductible on a T2200 form (limited)

Deductible on their own tax return (broader)
     

How the CRA Determines Employment Status

The label you put on the relationship does not control how the CRA classifies it. They look at the actual working arrangement. The key factors:

  1. Control
    Does the worker control how, when, and where the work is done? Greater control by the business = more likely employee.
  2. Tools and equipment
    Does the worker use their own tools? Own tools = contractor signal. Business-provided tools = employee signal.
  3. Subcontracting and helpers
    Can the worker subcontract the work or hire someone else to do it? Yes = contractor signal.
  4. Financial risk
    Does the worker stand to lose money if the project goes over budget or the work is substandard? Yes = contractor signal. Guaranteed pay regardless of outcome = employee signal.
  5. Integration
    Is the worker's work integral to the core business, or are they providing a service the business could do without? Integral = employee signal.

No single factor determines the outcome — the CRA looks at the whole picture.

Why Misclassification Is Risky

If the CRA determines someone you classified as a contractor was actually an employee:

  • You owe all the source deductions that should have been withheld — back to when the relationship started
  • You owe the employer's share of CPP and EI
  • Plus penalties and interest
  • The "employee" may also be entitled to employment standards protections retroactively (vacation pay, notice period, etc.)

This can amount to years of back-payments. It is one of the few areas where CRA assessments can go back further than the usual reassessment period.


Abnormal Procedures

You have been treating someone as a contractor but you are not sure they qualify.

Stop and get a proper assessment before the relationship continues. Ask your Mesa CPA advisor to review the arrangement. The CRA also has an online tool (Worker classification tool at canada.ca) for guidance, and you can request a ruling via form CPT1.


You want to convert a contractor to an employee.

Set a clear transition date. From that date forward, set up payroll, register for a payroll account if you do not have one, and start withholding deductions. Do not try to back-date the conversion without getting advice on the tax implications.


The worker wants to be treated as a contractor but the arrangement looks like employment.

The worker's preference does not change the CRA's assessment. If the working arrangement meets the tests for employment, calling it a contractor relationship does not make it one. Both parties take on risk in this scenario.


FAQ

Can I have someone sign a contract saying they are a contractor and have that protect me?

Partially. A written contract is evidence — but not conclusive. If the actual working arrangement looks like employment, the CRA can override the contract. The substance of the relationship matters more than what it is called.


What if the person has their own incorporated company?

This is a "personal services business" scenario, and it gets complex. The CRA has specific rules for incorporated contractors that can affect both the corporation and the business that hires it. Get advice before engaging an incorporated contractor for ongoing, integrated work.


Do I need to issue a T4A for contractors?

Yes, if you paid them more than $500 in the calendar year. A T4A reports payments made to non-employees. File it with the CRA and give a copy to the contractor by the last day of February each year.


What about international contractors?

Additional rules apply for payments to non-residents — including potential withholding tax obligations. Talk to your Mesa CPA advisor before engaging contractors outside Canada.