N-1.1 - Act respecting labour standards

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81.8. From the sixth week preceding the expected date of delivery, the employer may, in writing, require a pregnant employee who is still at work to produce a medical certificate attesting that she is fit to work.
If the employee refuses or neglects to produce the certificate within eight days, the employer may oblige her to take her maternity leave immediately by sending her a written notice to that effect giving reasons.
1990, c. 73, s. 34.