Employee vs. Employer Contributions
The Alternative Supports, Inc.. 401(k) Plan likely includes both employee salary deferrals and employer matching contributions. While employee contributions are typically fully vested, employer contributions may be subject to a vesting schedule. It’s essential to confirm which portion of the employer contributions is actually vested as of the divorce cut-off date (e.g., date of separation or court order).
Unvested employer contributions are generally forfeited when an employee leaves employment before they are fully vested. If your divorce order tries to divide unvested amounts, it may ultimately result in a lower-than-expected distribution to the alternate payee.

