You'll need also a Letter of employment for the time you were working for your employer, including NOC, Salary, duties, dates and worked hours. An offer letter provides a brief overview of the position and company and includes specific job details, such as start date, salary, work schedule and benefits.Learn everything about job offer letters for immigration, including eligibility criteria, required documents, and the process. A job offer letter is a document that a Canadian employer gives you (as a temporary worker). It explains the details of your job. We've drafted templates of job offer letters for your use. You can download a research position offer letter here, and a teaching position offer letter here. An employment verification letter can help prove income for a green card. Find a sample employment verification letter for immigration here. Here's everything you need to send a legally compliant offer letter to hire a fulltime employee in Canada.