Which document is necessary to file in case of an employee accident?

The correct choice is the NX report, which is essential for formally documenting workplace accidents involving employees. This report typically serves as a comprehensive record that fulfills legal and organizational requirements related to workplace safety and employee health. It ensures that all necessary details about the incident, including the nature of the accident, its causes, and the circumstances surrounding it, are captured accurately.

In many organizations, the NX report is aligned with regulatory compliance and is often used in the context of workers' compensation claims, insurance reports, and internal safety reviews. Filing this document helps facilitate investigations, track incidents over time, and implement necessary corrective measures to prevent future occurrences.

Other options like the employee accident form, accident investigation report, and incident report can also play roles in documenting accidents or initiating analyses, but the NX report is specifically tailored for formal reporting of employee-related incidents and is often recognized as the primary document that must be filed.