1. Performance Recognition: Include when the increment is linked to performance review results or achievements

2. Role Change: Include when the increment corresponds to additional responsibilities or role modification

3. Bonus/Variable Pay Updates: Include when changes to bonus structure or variable pay components are also being modified

4. Benefits Adjustments: Include when any benefits are being modified along with the salary increment

5. Probation Reference: Include when the increment follows successful completion of a probation period

6. Special Project Reference: Include when the increment is related to special project participation or completion

1. Salary Component Breakdown: Detailed breakdown of fixed and variable components of the new salary structure

2. Benefits Summary: Summary of updated benefits package if applicable

3. Performance Metrics: Reference to performance evaluation results if the increment is performance-based

4. Tax Declaration Form: Updated tax classification information if required by German tax authorities