Employee vs. Employer Contributions
This plan is likely made up of both employee deferrals and employer contributions. Not all of these funds are necessarily divisible. Employer contributions may come with a vesting schedule. If the participant (your ex-spouse) isn’t fully vested in those funds at the time of divorce or QDRO submission, unvested amounts may be forfeited and not available for division.
Be specific in the QDRO about what fraction or percentage of each component of the account is being awarded. You might allow for a coverture formula (which divides the account based on the portion earned during the marriage) or a flat percentage of the account on a specific date.

