Employee and Employer Contributions
Contributions in a 401(k) plan are typically made by both the employee and the employer. During divorce, it’s crucial to understand which portion of the plan is marital property. In general, any contributions made during the marriage are subject to division, while contributions made before or after the marriage are separate property unless agreed otherwise.
If the employee continued to contribute after separation, calculations must be adjusted. Likewise, if the employer made matching contributions, those need special treatment, particularly if they aren’t fully vested. More on that below.

