Ontario

Canada law applies in Ontario Ontario is a state of Canada, whose 16 researched instruments are listed on the Canada page, not here. The law of Ontario, described on this page below, applies here too.

All 1 named instruments researched to a stage, across one of the six areas of law we track: 1 in force. As of 24 September 2026.

AI law 1
Privacy law not researched
Scraping law not researched
Cybersecurity law not researched
Age gating law not researched
News aggregation law not researched

in forceenacted but not yet in forceproposedrepealed, withdrawn or blocked

Drafted with AI from the cited sources under the direction of UnGovr staff. UnGovr holds editorial responsibility for this page.

AI law1 instrument, 1 in force

Research summary (201 words)

Section 8.4 of Ontario's Employment Standards Act, 2000, added by the Working for Workers Four Act, 2024 (S.O. 2024, c. 3, Schedule 2), requires an employer that advertises a publicly advertised job posting and uses artificial intelligence to screen, assess or select applicants for the position to include a statement in the posting disclosing that use.

The duty binds an employer with 25 or more employees on the day the posting is posted; Ontario Regulation 476/24 exempts a smaller employer from the whole of Part III.1 and supplies the regulation-defined terms "artificial intelligence" and "publicly advertised job posting", the second of which excludes a general recruitment campaign or help wanted sign not for a specific position, a posting restricted to existing employees, and a posting for work to be performed outside Ontario, or partly outside Ontario where the work outside Ontario is not a continuation of work performed in Ontario.

Section 8.4 and the Regulation's operative definitions and exemption came into force January 1, 2026, on proclamation; the amending Act received Royal Assent March 21, 2024. The Enhancing Digital Security and Trust Act, 2024, which places duties on prescribed public sector entities that use artificial intelligence systems, is not described here.

AI sector rules

Employment Standards Act, 2000, use of artificial intelligence in job postings

Employment Standards Act 2000, S.O. 2000, c. 41, ss. 8.1, 8.4, as enacted by the Working for Workers Four Act, 2024, S.O. 2024, c. 3, Sched. 2, s. 2(1), and Ontario Regulation 476/24 (Rules and Exemptions re Job Postings), ss. 1, 2(1)official consolidated statute text, e-Laws (King's Printer for Ontario)

In force 9 months, effective 1 January 2026. Binds public and private bodies.

What this law does

Section 8.4(1) requires an employer that advertises a publicly advertised job posting and uses artificial intelligence to screen, assess or select applicants for the position to include in the posting a statement disclosing that use. The duty binds an employer with 25 or more employees on the day the posting is posted, and a smaller employer is exempt from the whole of Part III.1 under Ontario Regulation 476/24.

That Regulation also supplies the regulation-defined terms artificial intelligence and publicly advertised job posting, the second excluding a general recruitment campaign or help wanted sign not for a specific position, a posting restricted to existing employees, and a posting for work to be performed outside Ontario, or partly outside Ontario where the work outside Ontario is not a continuation of work performed in Ontario.

Section 8.4(2) exempts a posting that meets criteria prescribed by regulation. Every publicly advertised job posting under this Part, including one carrying this disclosure statement, must be retained by the employer for three years after it is removed from public access, under section 15(7.1) of the Act, a duty that reaches every such posting whether or not it discloses artificial intelligence use.

What it requires

Reporting clocks that run here1 instrument

The instruments whose obligation lines set a deadline for reporting an incident, a vulnerability or a personal-data breach, each deadline read from the sentence that carries it and listed shortest first. The law of Ontario comes first, then the law of the bodies above it that applies here.

The law of Canada, which applies in Ontario

as soon as feasible

PIPEDA breach of security safeguards regime

S.C. 2000, c. 5, ss. 10.1-10.3privacy law, in force since 1 November 2018

The sentence the clocks are read from

Report any breach of security safeguards involving personal information under the organization's control to the Privacy Commissioner as soon as feasible, if it is reasonable to believe the breach creates a real risk of significant harm to an individual.

Which of these one incident starts turns on the facts: the incident method works that through. The clocks document draws every clock in the corpus on one axis, with the sentence beside every rung.

This page covers the instruments LexLint has researched to a stage. Instruments named in the corpus but not yet researched are counted in the head and are not listed here. Every entry carries its own primary source on its note page. This is a research index, not legal advice.