1. Employee and Employer Contributions
Most 401(k) plans are made up of two parts: contributions made by the employee (from salary deferrals), and contributions made by the employer. These two sources are usually tracked separately. Your QDRO should clearly specify whether the alternate payee is receiving a share of:
- Just the employee contributions (usually 100% vested)
- Both employee and vested employer contributions
- Employer contributions subject to vesting rules (more on that next)

