Employee vs. Employer Contributions
Most 401(k) accounts include both employee deferrals and employer matching or profit-sharing contributions. In many cases, only the portion contributed during the marriage is divisible, and the court must specify a clear method of calculating that portion.
If the employer contributions were subject to a vesting schedule, you can’t count on all balances being available. Check with the plan administrator for a vesting report which shows what’s considered “vested” versus unvested at the date of divorce—or date of division, if different.

