The amount to be withheld depends on the Agency issuing the detention mandate. Up to 15 per cent of an employee`s available salary can be withheld to repay an unpaid student loan under a Ministry of Education garnishment order. In contrast, up to 10% of an employee`s available salary may be withheld to satisfy a seizure order from a public guarantee agency for student loans. The term “available remuneration” refers to the worker`s compensation, according to legal deductions. The maximum amount that several holders of broken student loans can seize from an employee is subject to the 25% limit set by the Consumer Credit Protection Act. 15. I recently learned that my employer deducted from my paycheque a contribution to the United Way workplace campaign. .