Hiring in Ontario With a PEO: What US Companies Get Wrong
Ontario is not Texas with a different area code. That sounds obvious, but US companies expanding into the province routinely make that assumption, and it costs them. Employment law here sits at the provincial level, termination rules have real teeth, and the Canada Revenue Agency runs on a remittance calendar that does not pause for confusion. A PEO can shield you from most of this, but only if you understand what the co-employment model actually covers and where your own obligations still live.
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Ontario Employment Law Is Not At-Will
If you’re used to running US payroll, Ontario is going to feel like a different country, because legally, it is. Most US employers operate under at-will employment, where you can end the relationship tomorrow without notice or cause. Ontario doesn’t work that way. The Employment Standards Act, 2000 (ESA) sets minimum notice periods tied to length of service, and common law courts regularly award more on top of that. An employee with five years in can reasonably expect eight weeks of statutory notice, plus whatever a court decides is “reasonable” under common law, which can stretch further still.
There’s no single federal employment framework in Canada that mirrors the US approach. Each province sets its own floor. Ontario’s floor is high. Treating a dismissal the way you would in an at-will state is one of the fastest ways to face a wrongful dismissal claim you didn’t see coming.
What a PEO Does in Ontario
The co-employment split
A Professional Employer Organisation enters a co-employment arrangement with you. Legally, the PEO becomes the employer of record for payroll and statutory compliance purposes. Your business directs the day-to-day work. The PEO handles payroll remittances, benefits administration, and ESA compliance on your behalf.
Where liability actually lands
That split matters more than most clients expect. The PEO carries liability for proper tax remittance to the CRA and for ensuring statutory minimums are met. You, as the client, still carry responsibility for working conditions, hours, and the decisions that trigger a termination. A PEO doesn’t absorb every risk. It distributes risk correctly so each party is accountable for what they control.
The Vacation Pay Trap
Ontario mandates a minimum of two weeks of vacation time after each completed year of employment, with vacation pay set at 4% of gross wages. After five years, that rises to three weeks and 6%. This is not discretionary. It accrues whether or not you have a written policy acknowledging it.
The common error US companies make is folding vacation pay into the base hourly rate without the correct written agreement. Ontario permits “vacation pay in lieu” to be paid with each paycheque, but only when a specific clause exists in the offer letter confirming that arrangement. Without that clause, the CRA and the Ministry of Labour treat the pay as wages, not as a vacation pay-out, and the entitlement accrues separately on top of it. You end up paying twice.
Getting the Onboarding Paperwork Right
A compliant Ontario offer letter is not a US offer letter with “Ontario” typed at the top. It needs to reference ESA minimums explicitly, set out the vacation pay structure, address termination in language that does not accidentally contract out of statutory rights, and confirm the role’s classification under Ontario law. Getting one of those elements wrong can void the termination clause entirely.
Beyond the letter, there are practical setup steps US companies regularly skip.
- Registering a CRA payroll account before the first paycheque runs
- Enrolling in Ontario’s statutory holiday schedule, which differs from US holidays (Family Day, for example, has no US equivalent)
- Confirming benefits comply with the Ontario Human Rights Code on equal treatment
A PEO handles most of this infrastructure, but the client still needs to review and sign off on the offer letter before it goes out.
When an EOR Makes More Sense
Here’s the practical fork in the road. A PEO in Ontario requires you to hold a registered Canadian business entity. If you’re testing the market, or if you have one hire and no Canadian legal presence, the co-employment model can’t work. There’s no second employer to share the arrangement with.
An Employer of Record in Canada solves this. The EOR becomes the sole legal employer. You direct the work, the EOR employs the person, and you need no Canadian entity at all. For companies early in an Ontario expansion, this is often the smarter starting point. You can learn the market without committing to a permanent corporate structure first. Our post on the difference between a PEO and an EOR covers the full comparison if you’re weighing both options.
The CRA Remittance Calendar
How the schedule is assigned
The CRA assigns remittance schedules based on your average monthly withholding. New employers start as regular remitters, meaning source deductions are due by the 15th of the month following the pay period. Once your average monthly withholding exceeds $25,000, you move to an accelerated schedule, with remittances due within days of each payday rather than weeks later.
Where US companies get caught
US companies miss this threshold trigger regularly. They budget on the monthly cycle, then receive an accelerated classification notice and suddenly face remittances due in three business days. Late remittances attract penalties starting at 3% and climbing quickly. The CRA does not waive these for companies that didn’t know the rules applied to them.
If you’re running Ontario payroll yourself without a PEO or EOR in place, check your remittance classification with the CRA before your second payroll cycle. Don’t wait for your first penalty notice to find out which schedule you’re on.
