1. Employee and Employer Contributions
401(k) plans like this typically include both employee deferrals and employer matching or discretionary contributions. If your spouse’s plan includes employer contributions, it’s vital to determine how much is subject to division and whether any contributions are unvested (meaning your spouse hasn’t earned the full rights to them yet).
In divorce, only vested amounts can be divided—and if your QDRO doesn’t clearly distinguish between the types of contributions, the plan administrator may reject it or miscalculate the payout.

