A clear, objective, and detailed description of the incident(s), including specific dates, times, and locations.
Clearly define what acceptable behavior looks like going forward.
How to Write Up an Employee: 11 Common Situations - BambooHR
A clear statement of what will happen if performance does not improve (e.g., suspension, termination).
Discuss the write-up with the employee in a private setting and have them sign it. Handling the Process (Best Practices)
Spaces for both the supervisor and the employee to sign, acknowledging the document was discussed. Step-by-Step Writing Guide