Two Pay Rates in One Week? How Overtime Is Calculated in Ontario

Start with the ordinary case. Under ESA section 22(1), an Ontario employer must pay overtime at 1.5× the regular rate for each hour worked over 44 hours in a work week. The threshold is 44 hours per week — not 40. (That 44-hour line is distinctly Ontarian; the federal and Québec regimes use 40. Applying the wrong threshold is one of the most common errors in cross-jurisdiction overtime disputes.) There is no daily overtime threshold in Ontario; the calculation is weekly.

When you have a single rate, this is simple: work 50 hours at $20/hour, and the 6 hours over 44 are paid at $30/hour instead of $20.

Now suppose you have two regular rates in the same work week. Which rate feeds the 1.5× calculation for your overtime hours?

Section 22(1) opens with the words "Subject to subsection (1.1)" — and subsection 22(1.1) is the rule that governs multiple rates. Its effect is this: where an employee has more than one regular rate in a work week, each hour worked over 44 is paid at 1.5× the regular rate that applies to the work the employee is performing in that hour — not a single blended average of the week's rates (unless the rule specifically provides otherwise).

In plain terms: overtime attaches to the work actually being done during the overtime hours. If the hours that pushed you over 44 were higher-rate hours, your overtime is calculated on the higher rate. If they were lower-rate hours, it's calculated on the lower rate.

Let's make it concrete. Figures below are illustrative only — the principle is what matters.

Say you work for one employer in two roles in a single week:

• Role A (delivery driving): $26/hour
• Role B (warehouse): $20/hour

Over the week you work 50 hours total — 44 of them are your "straight time," and 6 are overtime. The question the ESA answers is: what work were you performing during those 6 hours over 44?

• If those 6 overtime hours were driving hours (Role A), your overtime pay is 6 × (1.5 × $26) = 6 × $39 = $234 for the overtime portion.
• If those 6 overtime hours were warehouse hours (Role B), your overtime pay is 6 × (1.5 × $20) = 6 × $30 = $180.

That is a $54 difference for a single week — and it repeats every week the pattern holds. Overtime spent on your higher-rate work is genuinely worth more, and section 22(1.1) says you are entitled to have it calculated that way.

Here is where workers lose money: a payroll system set up for single-rate employees will often take a shortcut and apply one rate to all overtime — frequently the lower of your two rates, or a flat "base" rate — regardless of what work you were actually doing over 44 hours. If your higher-rate work is what tipped you into overtime, that shortcut underpays you.

So the check is straightforward:

1. Confirm you genuinely had more than one regular rate in the week.
2. Identify which work you were doing during the hours over 44.
3. Confirm your overtime was paid at 1.5× the rate for that work — not a blanket low rate applied to everything.

If the numbers don't line up, that gap is recoverable.

Two practical points reinforce this. First, records: your Ontario employer must record the dates and times you worked (ESA s. 15(1) para 3.1) and, in particular, the hours you work over 44 in a week (s. 15(4)); those records must be kept for three years (s. 15(5)). Those are exactly the records that prove which work happened during your overtime hours — you can ask for them.

Second, the clock: in Ontario, an employment standards officer cannot order wages that became due more than two years before your complaint was filed (ESA s. 111). Every month you wait, older underpaid weeks fall out of reach. If you spot a multi-rate overtime error, don't sit on it. Our step-by-step guide to claiming unpaid wages in Canada and the Ontario ESA claim guide walk through the process.