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  1. Topics & Tools
  2. Employment Law & Compliance
  3. Mass Terminations in Ontario: Rights, Risks, and Responsibilities
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Mass Terminations in Ontario: Rights, Risks, and Responsibilities

April 22, 2025 | Danielle Rawlinson, Clifford J. Hart, and Jeffrey Mitchell © Borden Ladner Gervais LLP

Laid off office workers leaving a building, carrying boxes of personal items.

Many employers in Ontario are asking about their obligations in the event of an economic downturn, with the potential for layoffs or mass terminations.

The Ontario Employment Standards Act, 2000 (ESA) layoff and mass termination provisions can be technical and complex. It is important to understand and comply with the rules and obligations under the ESA to avoid potential increased or unexpected liabilities.

ESA Temporary Layoffs

Employees who are placed on a temporary layoff will be deemed terminated once the threshold for a temporary layoff period is triggered (13 weeks on layoff in any consecutive 20-week period, which can be extended to 35 weeks in any consecutive 52-week period in certain circumstances).

ESA Notice of Termination and Severance

Subject to certain limited exceptions, all employees are entitled to minimum statutory notice periods upon termination of employment under the ESA. In the absence of a mass termination, the statutory notice period is based on the employee’s years of service and can be up to eight weeks after eight years of service. In addition to notice (or pay in lieu of notice with benefits continuance), employees with five or more years of service with an employer that has a payroll of greater than $2.5 million are entitled to statutory severance pay, calculated at one week’s pay for each year of service, up to a maximum of 26 weeks of pay.

ESA Mass Terminations

Under the ESA, a “mass termination” occurs when an employer terminates the employment of 50 or more employees at the employer’s “establishment” within a four-week period. The four-week period is a “rolling window,” with a mass termination occurring on the first occasion of 50 or more employees being terminated within the same four-week period. This could happen in various situations, such as downsizing, restructuring, or a companywide closure.

“Establishment” includes multiple locations in the same municipality where the employer carries on a business through more than one location. It can also extend to multiple facilities outside a municipality if the employees have contractual “bumping rights” to those facilities.

The mass termination provisions do not apply if the number of terminated employees is 10% or less of the workers employed for at least three months and the terminations are not caused by the permanent discontinuance of the employer’s business at the establishment.

In the event of a mass termination:

1. With limited exceptions, the ESA notice of termination/termination pay entitlements increase for all employees who are terminated as part of a mass termination to eight, 12, or 16 weeks.

2. The ESA requires the employer to provide the director of employment standards with a Form 1 — Notice of Termination, which must be posted in the workplace(s). Written notice must be given to the affected employees, as well. Importantly, failure to file the Form 1 can be costly because the notice of termination clock starts ticking only when it is submitted.

Notice Period 

The notice period required for mass termination overrides the individual ESA notice period and is the same for the entire group, regardless of length of service. The required ESA notice periods correspond with the following breakdown:

  • 50 to 199 employees: at least eight weeks’ notice.
  • 200 to 499 employees: at least 12 weeks’ notice.
  • 500 or more employees: at least 16 weeks’ notice.

Employers have the option of requiring employees to work during the notice period (working notice) or, alternatively, providing them with termination pay in lieu of notice (with benefits continuance). Statutory severance pay would also be owed if the thresholds noted above apply.

Of note:

  • The ESA provides for minimum entitlements only. Contractual and common-law reasonable-notice obligations for nonunion employees will still have to be considered.
  • With respect to unionized employees, any notice, consultation, layoff, recall, or seniority provisions in a collective agreement will have to be carefully applied.

Mass terminations require careful attention to detail under the ESA. By understanding the ESA’s requirements and providing the proper notices, employers can minimize legal risk.

Danielle Rawlinson, Clifford J. Hart, and Jeffrey Mitchell are attorneys with Borden Ladner Gervais LLP in Toronto. © 2025 Borden Ladner Gervais LLP. All rights reserved. Reposted with permission of Lexology.

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