Final answer:
WCB must be notified of any injury or illness that results in lost time or medical treatment. Minor bruises or scratches do not need to be reported.
Step-by-step explanation:
WCB must be notified of any injury or illness that results in lost time or medical treatment. This means that if a worker is unable to work or requires medical attention due to an injury or illness, the employer must notify the appropriate authority. Minor injuries like bruises or scratches may not require medical treatment or result in lost time, so they do not need to be reported to WCB. The purpose of notifying WCB is to ensure that the injured worker receives appropriate benefits and compensation under workman's compensation insurance.