Employee and Employer Contributions: What Can Be Divided?
In a 401(k), both the employee and employer may contribute to the account. However, employer contributions might be subject to a vesting schedule. If your divorce is finalized before full vesting, some of those employer-funded amounts may not be available to divide.
If you’re the alternate payee (usually the non-employee spouse), make sure your QDRO only includes the vested balance as of the agreed-upon division date. Otherwise, you risk delays or rejections from the plan administrator. If you’re not sure what’s vested, get written confirmation from the plan administrator before filing the QDRO.

