Yes you can get employment insurance and accident insurance benefits at the same time. But you must declare income replacement benefits as income when you are in receipt of EI. Income replacement benefits will be deducted from your EI payments.
The rules concerning the interaction of Employment Insurance benefits, income replacement benefits, WSIB, CPP disability, LTD, STD, ODSP and OW are very complicated. The rules are also different depending upon when you first qualify for the benefit. It is best if you contact me and we can discuss your specific case.