You can contract for a temporary worker to help out at your company for a day or a week or months at a time. There really is no set time limit — just a mental limit to how long a temp can be a temp.
While some temps enjoy the satisfaction and security of working for one employer for weeks or months at a time it usually is not a good idea to employ temporary workers for so long that they begin to feel like full-time employees. Once your company goes beyond making the temp feel like a member of the team and begins making employee-type demands on the temp, the temp should, by law, become an employee and be entitled to all the benefits that an employee of your company receives. Using temps long-term to get work done without having to pay benefits is not a sound business practice and indeed may be contrary to labour laws.
To avoid any confusion, a lot of temp agencies and companies who regularly use temps set a limit to the length of temporary contracts. These limits range from six months to 18 months. Most employment lawyers advise erring on the short side to avoid any conflicts.

Possible Links for Canadian Security Job Openings
Ace Employment Services Winnipeg
www.employment .com
www.aceemploymentservices.net