WSIB is an administrative board that has multiple levels. A worker’s day to day contact is a case manager. The case manager will gather information about the accident and about you as a worker (what type of work, how much did you make, etc.). This is the first line decision maker who will decide if you are approved, denied, or only partially approved.
If you are unhappy with the decision, you can appeal to the next level person: an appeal resolution officer. This person is the highest level within WSIB. If they do not approve your appeal, you must apply to a higher body that is actually outside WSIB- a tribunal called WSIAT (9:00). WSIAT is a separate entity and is not bound by WSIB decisions- they are the higher body and any decisions they overturn, WSIB must follow.