1. Dividing Employee vs. Employer Contributions
401(k) accounts are made up of both employee contributions (what the participant contributes from their paycheck) and employer contributions (what the company adds). In divorce, employee contributions are usually fully vested, so they’re available to divide.
However, employer contributions often follow a vesting schedule—which means the employee must work at the company for a certain number of years before the money becomes theirs. Unvested employer contributions are generally not divisible in a QDRO. If your divorce occurs before the participant is fully vested, these funds could end up being forfeited if not handled correctly. Make sure your QDRO accounts for this possibility.

