I think the Record of Employment have all the details.
https://stepstojustice.ca/questions/covid-19/how-do-i-get-copy-my-record-employment-roe/
How do I get a copy of my Record of Employment (ROE)?
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.
Getting your ROE
There are two ways for your employer to give you your ROE. They can send your ROE to the government electronically. Your employer must send an electronic copy within 5 days of the end of the pay period in which you stopped working. If this happens, you don't need a paper copy. You will need a My Service Canada Account to see your ROE online.
Or, your employer can give you a paper copy of your ROE. They must do this within 5 days of your first interruption of earnings. If your employer gives you a paper copy, you have to mail it to Service Canada at:
Employment Insurance – Service Canada
PO Box 2602
Mississauga, Ontario
L4T 0B1
You can also ask your employer for your ROE using this letter writing tool.
Write a letter to get your ROE