Employee vs. Employer Contributions
Employee contributions (the amounts the participant adds from their paycheck) are always 100% vested. That means they can be shared with an alternate payee (typically the ex-spouse) through a QDRO without restriction.
Employer contributions are subject to a vesting schedule. If the participant has not worked at the company long enough, some or all of those contributions may not belong to them yet—and therefore cannot be divided through the QDRO. The QDRO should clearly state whether it includes only vested amounts as of the date of divorce or date of QDRO processing. These details matter and must be clarified upfront.

