A job offer letter is a document that a Canadian employer gives you (as a temporary worker). It explains the details of your job.The offer of employment number. Once you have one of these numbers, you can apply to get, extend or modify a work permit. The process consists of the following steps: Create an Account. Hillsborough Township Open Positions. Here's everything you need to send a legally compliant offer letter to hire a fulltime employee in Canada. These letters of Canadian law are WHY I don't believe that you have a job offer. Through Online Job Offers, prospective employees can view, decline, accept and complete pending job offers. View the Town of Hillsborough's current employment opportunities and to apply directly online.