For example, Federal, state, or local government plans and some church plans are not covered. The Hennepin County Supplemental Plan offers a variety of investment options to help you build a diversified portfolio.Learn more about the investment options available under the Plan online and in the Investment Option Summary. Although there is no list of approved investments for retirement plans, there are special rules contained in ERISA that apply to retirement plan investments. The county matches the employee contribution. Self-directed 401k falls under federal code (ERISA) and 401k anti-alienation protection. 401k retirement assets are shielded from creditors in Minnesota. This Article IV commencing on the Participant's normal retirement date, as defined in the Pension Plan. The "Note the following about Plan investment funds" in the "Accumulation of retirement assets" section. Acronym - Employer Reporting and Information System. ERISA.