A Board form titled “Employer’s Report of Work-Related Accident or Occupational Disease” filed by employers within ten days after an accident occurs, as required by WCL .110. The form includes a section identifying the case and principal parties and additional sections labeled “Accident,” “Injured Person,” “Nature of Injury,” “Cause of Accident,” and “Fatal Cases.” Failure to make timely C-2 filings subjects employers to potential administrative and criminal penalties.