Employee and Employer Contributions
One of the most common mistakes in dividing 401(k)s is failing to distinguish between amounts contributed by the employee versus the company. Contributions made during the marriage are generally considered marital property and subject to division, but this can get tricky with matching employer contributions.
The QDRO must specify how to divide:
- Pre-marital contributions (usually excluded)
- Contributions made during the marriage (typically divided)
- Post-separation contributions (often excluded, but varies by state)
- Employer matching contributions (subject to vesting rules)

