Overtime Rules in Ontario: A Complete Employer Guide

Table of Contents

1. What Is Overtime Under Ontario Law?
2. The 44-Hour Rule Explained
3. How to Calculate Overtime Pay
4. The 50% Rule for Employees With Multiple Rates
5. Who Is Exempt from Overtime in Ontario?
6. The 48-Hour Weekly Maximum
7. Lieu Time: Banking Overtime as Time Off
8. Overtime Averaging Agreements
9. On-Call Time and Overtime
10. Recordkeeping Requirements
11. Common Overtime Compliance Mistakes
12. Penalties for Non-Compliance
13. When to Get HR or Legal Help
14. Frequently Asked Questions

Most Ontario employers know overtime exists. Far fewer understand how it actually works in practice — which employees it covers, how to calculate it for different pay structures, when averaging is permitted, and what can happen when it goes wrong.

This guide covers the full picture under Ontario's Employment Standards Act, 2000 (ESA), from the basic 44-hour threshold to the nuances that trip up even experienced employers.

What Is Overtime Under Ontario Law?

Overtime in Ontario is governed by Part VIII of the Employment Standards Act, 2000, specifically section 22. The law requires employers to pay eligible employees at a premium rate for hours worked beyond the standard weekly threshold.

Unlike some jurisdictions, Ontario does not have daily overtime. There is no trigger after 8 hours in a day. The calculation is purely weekly — hours in a single work week are what matter. If an employee works 10 hours on Monday but only 34 hours total for the week, no overtime is owed.

The 44-Hour Rule Explained

Overtime applies once an employee works more than 44 hours in a work week. Every hour beyond 44 must be paid at a minimum of 1.5 times the employee's regular rate.

Hours Worked in Week	Regular Pay Applies To	Overtime Pay Applies To
40 hours	All 40 hours	None
44 hours	All 44 hours	None (44 is the threshold, not above it)
50 hours	First 44 hours	6 hours at 1.5x
60 hours	First 44 hours	16 hours at 1.5x

A "work week" is any fixed recurring period of 7 consecutive days. Employers define the work week — it does not have to run Monday to Sunday, but it must be consistent and applied uniformly.

How to Calculate Overtime Pay

The calculation method depends on how the employee is paid. Here are the four main scenarios:

Hourly Employees

This is the simplest case. If an employee earns $22/hour and works 50 hours in a week:

• Regular pay: 44 hours × $22 = $968
• Overtime pay: 6 hours × $33 (1.5 × $22) = $198
• Total: $1,166

Salaried Employees

Salary must be converted to an hourly rate. The ESA formula divides the weekly salary by 44 (the standard workweek). If an employee earns $1,100/week and works 50 hours:

• Regular hourly rate: $1,100 ÷ 44 = $25/hour
• Overtime rate: $25 × 1.5 = $37.50/hour
• Overtime pay owed: 6 hours × $37.50 = $225
• Total weekly pay: $1,325

Many employers mistakenly believe a fixed salary covers all hours worked. It does not. Unless the role qualifies for a specific exemption, overtime hours beyond 44 must still be compensated at the premium rate.

Commission and Variable Pay Employees

When pay is primarily commission-based, the regular rate for a given week is calculated by dividing total earnings (commissions plus any base) by total hours worked. That rate is then multiplied by 0.5 — not the full 1.5 — for overtime hours, because the regular rate already compensates for those hours.

Example: An employee earns $1,500 in commissions in a 50-hour week.

• Regular rate: $1,500 ÷ 50 hours = $30/hour
• Overtime premium: 6 hours × $15 (0.5 × $30) = $90
• Total: $1,590

Employees Earning Bonuses or Shift Differentials

Non-discretionary bonuses — bonuses tied to a metric or earned through performance — must be included in the regular rate calculation before computing overtime. Discretionary bonuses (such as a surprise holiday gift) generally do not. Shift premiums are typically included in the regular rate.

The 50% Rule for Employees With Multiple Rates

When an employee works in two or more categories during a week — and one category would be exempt from overtime while another is not — the 50% rule under Ontario Regulation 285/01 determines which rules apply:

• If the employee spends 50% or more of their hours in a category entitled to overtime, overtime rules apply to the entire week
• If they spend more than 50% in an exempt category, overtime may not apply

This matters in industries where staff shift between roles — for example, a retail employee who sometimes supervises a shift. If they spend more than half the week in a non-supervisory role, they remain overtime-eligible for the full week.

Who Is Exempt from Overtime in Ontario?

Ontario Regulation 285/01 sets out specific exemptions. The most critical point: exemptions are based on what the person actually does — not what their title says, and not how they are paid. Calling someone a "manager" does not make them one for ESA purposes.

Exemption Category	Requirements to Qualify	Common Trap
Managers & Supervisors	Must primarily perform managerial functions; must have genuine authority to hire, fire, or discipline (not just recommend)	Giving someone the title of "supervisor" without real authority does not qualify
Licensed Professionals	Architects, engineers, chartered accountants, lawyers, physicians, surgeons, and others practising under a professional licence	Paralegal staff, accounting clerks, or technicians without a licence are not exempt
Outside Sales	Primary role is selling goods or services away from the employer's place of business; at least 50% of compensation from commissions	Inside sales or phone-based sales roles do not qualify
IT Professionals	Primarily engaged in the design, development, and analysis of information systems, or in applied mathematics for computers	IT support, help desk, and system maintenance roles generally do not qualify
Regulated Industries	Certain sectors (e.g., some agricultural workers, residential home workers) have different thresholds or full exemptions under separate regulations	Construction has its own overtime rules under O.Reg. 213/91

When in doubt, classify the employee as overtime-eligible and seek HR or legal advice before applying an exemption. Misclassification can trigger retroactive overtime claims going back several years.

The 48-Hour Weekly Maximum

Separate from overtime, the ESA limits the maximum hours an employer can require an employee to work. Under section 17, employees cannot be required to work more than 48 hours per week.

To exceed 48 hours, two conditions must both be met:

1. The employee provides written consent
2. The Director of Employment Standards has approved an excess hours agreement (or the employer has an approved excess hours averaging agreement)

Employees also have the right to revoke consent to work excess hours with two weeks’ written notice. An employer cannot dismiss or otherwise retaliate against an employee who withdraws consent.

Note: the 48-hour cap and overtime are separate issues. Overtime pay applies from hour 45 onward regardless of whether the employee is in an excess hours situation.

Lieu Time: Banking Overtime as Time Off

Instead of paying overtime wages, an employer and employee can agree in writing to bank overtime hours as paid time off. This is often called "lieu time" or "time off in lieu" (TOIL).

The ratio must still reflect the 1.5x premium: for each overtime hour worked, the employee earns 1.5 hours of paid time off — not 1-for-1.

Rules for lieu time:

• Must be agreed to in writing before the overtime is worked
• Time off must be taken within 3 months of the week it was earned, or within 12 months with written agreement
• If banked time is not taken within the deadline, the employer must pay out the overtime wages in the next pay period
• On termination, unused banked time must be paid out at the overtime rate
• The employer cannot unilaterally force employees to take lieu time — the option must be mutually agreed, not mandated

Overtime Averaging Agreements

In industries where hours fluctuate significantly week to week, an overtime averaging agreement can simplify administration. Rather than calculating overtime weekly, hours are averaged across a specified period and overtime applies only to hours exceeding 44 × the number of weeks in the period.

Key requirements:

• Must be in writing and signed by the employee
• Averaging period cannot exceed 4 weeks
• Must be approved by the Director of Employment Standards or fall within a recognized agreement format
• Employee must receive a copy of the agreement

Example: With a 4-week averaging agreement and threshold of 176 hours (44 × 4). If an employee works 200 hours over those 4 weeks, overtime applies to the 24 hours over threshold — regardless of how those hours were distributed week by week.

A common compliance failure is using averaging agreements that were never properly formalized in writing, or applying them to employees who never signed one. Verbal agreements are not valid under the ESA.

On-Call Time and Overtime

Whether on-call time counts toward overtime depends on how restricted the employee is during that time:

• Restricted on-call (must remain at or near the workplace, cannot engage in personal activities): generally counts as hours worked
• Unrestricted on-call (at home, free to pursue other activities, simply required to respond if called): generally does not count as hours worked until the call is actually received

This matters for industries like healthcare, property management, and security, where on-call arrangements are common. Employers should document on-call policies clearly and track hours when employees are genuinely restricted.

Note: employees called in to work for a shift of less than 3 hours are entitled to a minimum of 3 hours’ pay under Ontario's three-hour rule. This is separate from overtime rules but relevant to scheduling practice.

Recordkeeping Requirements

The ESA requires employers to retain time and wage records. While the Act does not mandate a specific timekeeping system, employers must be able to demonstrate compliance if investigated. Best practice includes:

• Daily record of hours worked (start time, end time, any breaks)
• Weekly total of hours worked and identification of overtime hours
• Wage calculations including overtime amounts
• Copies of any overtime or lieu time agreements
• Copies of averaging agreements

Records must be kept for a minimum of 3 years and must be accessible to Ministry of Labour inspectors on request.

Common Overtime Compliance Mistakes Ontario Employers Make

Mistake	Why It Happens	Consequence
Misclassifying employees as "managers" to avoid overtime	Employers assign titles without genuine managerial duties	Ministry of Labour order to pay retroactive overtime plus penalties
Assuming salaried employees are exempt	Confusion between pay structure and exemption rules	Retroactive overtime claims, potentially for multiple employees
Using invalid or verbal averaging agreements	Assuming an oral arrangement is sufficient	Agreement disregarded; overtime calculated weekly, retroactive amounts owed
Failing to track hours for salaried employees	"They're salaried so hours do not matter"	Unable to defend against overtime claims; Ministry order to pay
Not paying out banked lieu time on termination	Losing track of accrued balances	Unpaid wages claim; Ministry order
Applying a US-based exemption standard	Using US templates or policies without Ontario-specific review	Non-compliance with Ontario Regulation 285/01
Requiring work during unpaid breaks	Informal expectations to check email or respond to customers during lunch	Break time counts as hours worked; adds to weekly total

Penalties for Non-Compliance

The Ministry of Labour, Immigration, Training and Skills Development enforces the ESA through employment standards officers. When overtime violations are found:

• The employer receives an Order to Pay for unpaid overtime wages (plus interest)
• Administrative penalties: up to $250 for a first contravention, $500 for a second, and $1,000 for a third or subsequent contravention
• Directors of corporations can be held personally liable for unpaid wages
• Claims can typically be filed for violations within the 2 years preceding the complaint
• Class action risk: multiple employees with the same violation can file collectively

Enforcement risk increases after employee departures — terminated employees frequently file complaints with the Ministry. Having clear documentation and lawful practices is the only reliable protection.

When to Get HR or Legal Help

Overtime compliance is more nuanced than most employers expect. The calculation methodology alone varies across pay types, and applying exemptions incorrectly can expose you to retroactive liability covering potentially dozens of employees at once.

Consider getting external support when:

• You have employees in roles where the managerial or professional exemption is questionable
• You want to implement or update averaging agreements
• You have a mix of hourly, salaried, and commission employees
• You have acquired a business and are inheriting another employer's workforce and policies
• An employee has filed or threatened a complaint about unpaid wages
• You are expanding to multiple provinces and need to understand cross-provincial differences

An HR consultant or fractional HR professional can conduct a compensation compliance audit, review your classification approach, and help build lawful agreements and policies before an issue arises. See our guide on contractor vs. employee classification in Ontario for the related topic of worker status, which raises similar compliance risks.

For companies managing terminations related to overtime disputes, see our resource on termination and severance pay in Ontario.

If you are ready to talk through your overtime policies, contact HRX Connect for a confidential consultation.

Frequently Asked Questions

What is the overtime threshold in Ontario?

Overtime begins after 44 hours worked in a single work week. There is no daily overtime threshold under the ESA unless a written employment contract specifies one.

What is the overtime rate in Ontario?

The minimum overtime rate is 1.5 times the regular rate of pay (“time and a half”). An employee earning $22/hour earns $33/hour for each overtime hour worked beyond 44 in a week.

Are salaried employees exempt from overtime in Ontario?

No. Salary does not determine overtime eligibility. ESA exemptions are based on the nature of job duties, not whether the person is paid a salary. Most salaried employees retain full overtime rights.

Can I require my employees to work more than 44 hours?

Yes — with the obligation to pay overtime for hours beyond 44. To require work beyond 48 hours, you also need the employee's written consent. Employees can withdraw that consent with two weeks' written notice.

Does Ontario have daily overtime?

No. Ontario overtime is calculated on a weekly basis only. A 10-hour day does not trigger overtime unless total weekly hours exceed 44. Some other provinces (like British Columbia) have daily overtime thresholds, but Ontario does not.

What happens if I underpay overtime?

Employees can file a complaint with the Ministry of Labour. If a violation is found, the employer faces an Order to Pay the unpaid wages (plus interest) and may be subject to administrative penalties. Directors of corporations can also be held personally liable.

Sources: Ontario Government: ESA Overtime Pay Guide | Employment Standards Act, 2000, S.O. 2000, c. 41 | Ontario Regulation 285/01