We all make mistakes. It does happen that an employer erroneously overpays or under deduct when payments are made. An employer is entitled to recover these over-payments from your salary; however, this is regulated by the MIBCO Main Collective Agreement.
The provisions of Clause 3.8 (12)(a) of the MIBCO Main Collective Agreement states the following:
“’If an employer, owing to clerical or accounting or administrative error, or miscalculation, pays an employee any remuneration or leave pay in excess of the amount legally payable, the employer shall be entitled to recover the amount of the over-payment by deduction from subsequent wages or earnings or leave pay, subject to the following conditions:
The deductions may be made from one or more payments of earnings or leave pay, but no one deduction may exceed 20 percent of the payment from which it is deducted;”
In laymen terms, the employer is entitled to deduct 20% from your net salary weekly/monthly to recover the amount.
In a Nutshell: Be pro-active when you realize you were overpaid and inform your employer accordingly.