Yes, but the Employment Standards Act attaches the same consequence to the buyer’s own integration decisions as to an outright dismissal, once the employee resigns in response.
Short answer
Ontario’s ESA s.63(1)(b) severs employment where “the employer constructively dismisses the employee and the employee resigns from his or her employment in response…within a reasonable period.” The Act never defines constructive dismissal — the content of the test comes from the common law, and the Act supplies only the consequence — but a title change, a materially longer commute and a reduced bonus plan delivered together, to a long-service employee, is exactly the combination that produces a resignation letter with a list in it.
Neither the employer’s conduct nor the employee’s resignation alone triggers the section — both are required, and the resignation has to come “in response within a reasonable period.” An integration change does not create a measurable liability the day it is made; it creates a latent one that crystallises only if someone resigns, and expires if nobody does within a reasonable window. Section 141(1) paragraph 13 gives the government power to prescribe what constitutes a constructive dismissal, and no such regulation exists — so there is no statutory checklist to test a change against, only the common-law standard.
ESA s.60(1)(a) prohibits an employer from reducing an employee’s wage rate or altering “any other term or condition of employment” during a statutory notice period — two separate limbs joined by “or,” and the second does not ask whether the change benefits the employee. A pay increase clears the first limb; a change of insurance carrier, scheduling system or reporting line is still an alteration of a term or condition and breaches the second, even where nobody involved is worse off in dollar terms.
The combined-changes mechanic decided a title, a commute and a bonus plan all changed at once. The commission-plan version is the commission rewrite that constructively dismissed four salespeople. The notice-period standstill decided forty people on working notice and one pay grid.
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