Employee vs. Employer Contributions
With a 401(k), there are typically two sources of contributions: the employee (through payroll deferrals) and the employer (such as match or profit-sharing). Your QDRO should specify whether the alternate payee—often the non-employee spouse—is entitled to just the employee contributions or both employee and employer amounts.
Employer contributions are often subject to a vesting schedule. If your spouse isn’t 100% vested in employer contributions at the time of divorce, they may forfeit those unvested amounts. It’s important to determine and include the vested balance as of the division date.

