1. Employee vs. Employer Contributions
Most 401(k)s include:
- Employee deferrals: The portion of salary the employee chooses to contribute
- Employer matching or profit-sharing contributions: This part is subject to vesting rules
The QDRO can divide just employee deferrals, or both employee and employer contributions. However, any unvested employer funds as of the marital division date might be excluded from the division unless specifically addressed.

