Your Record of Employment (ROE) is a form that your employer fills in with information like how long you've worked for them, how many hours you worked, and how much you earned.
Your ROE also gives the reason why you're no longer working. For example, it will say if you were laid off, quit, or were fired.
Normally, Service Canada needs your ROE to decide if you're eligible for benefits. For example, to qualify for Employment Insurance, Service Canada will check to make sure you worked enough hours in the past year.