Ernewein v. Honda Canada includes the following statement on the limitation of claims for unpaid overtime pursuant to the Employment Standards Act:
Where a claim for unpaid overtime is based upon the overtime provisions of the Employment Standards Act, the courts generally consider the claim encompassed by the relevant provisions of the Limitations Act.
This might be helpful when considering a limitations defence to an unpaid overtime claim.
It does seem to imply that there’s uncertainty about the application of the Limitations Act to these claims. I don’t recall any—please forward me the citations if you do—but I can’t imagine where uncertainty would arise. The Limitations Act applies to all claims asserted in court proceedings to remedy a loss caused by wrongful conduct, including all claims for unpaid overtime.