An employer shall complete a First Report of Occupational Injury or Illness (WCB-1) within 7 days after the employer receives notice or has knowledge of an injury that has required the services of a health care provider but has not caused the employee to lose a day's work. A copy of the First Report of Occupational Injury or Illness (WCB-1) shall be sent to the employee and, unless the employer is self-insured, the employer's insurer within 24 hours after the First Report of Occupational Injury or Illness (WCB-1) has been completed.
90- 351 C.M.R. ch. 3, § 1-A