File Form 5500 to report information on the qualification of the plan, its financial condition, investments and the operations of the plan. This Legislative Brief provides tips on how employers can determine the plan name, plan number and plan year for their employee benefit plans.ERISA requires two different types of documents as the foundation of establishing and maintaining a health and welfare benefits plan. Form 5500 is filed with the DOL and contains information about a 401(k) plan's financial condition, plan qualifications, and operation. Group benefits plans, including 401K, pension, life, and health plans. This checklist may be used as a tool to help you meet 401(k) filing requirements.