If an employer has legally placed an employee on a temporary layoff, the employee will not be entitled to reasonable notice. If you have questions about the legality of your layoff, you may want to seek legal advice.
If the layoff was legal, employment insurance may be an option for the duration of the layoff.
If your layoff was illegal, it may amount to constructive dismissal, and the employee could be entitled to reasonable notice or pay in lieu of notice.