1. Previous Warnings: Reference to any previous verbal or written warnings, used when this is not the first incident

2. Support Resources: Information about available resources like training, counseling, or mentoring, included when relevant to helping the employee improve

3. Union Representative Notice: Required notification of union representation rights, included for unionized employees

4. Performance Improvement Plan Reference: Reference to attached PIP document, included when formal performance improvement plan is being implemented

5. Investigation Findings: Summary of investigation results, included when the warning follows a formal investigation

6. Appeal Process: Information about the company's appeal or grievance process, included when required by company policy

1. Evidence Documentation: Copies of relevant evidence supporting the warning (e.g., attendance records, incident reports, customer complaints)

2. Performance Improvement Plan: Detailed plan outlining specific goals, metrics, and timeline for improvement

3. Relevant Company Policies: Copies of specific company policies or procedures referenced in the warning letter

4. Previous Warning Records: Copies of previous warning letters or documentation of verbal warnings

5. Witness Statements: If applicable, documented statements from witnesses to the incident(s)