No deferred compensation plan shall become effective until the Board, county, municipality, authority or other political subdivision of the Commonwealth is satisfied, by opinion of its respective counsel, such federal agency or agencies as may be deemed necessary, or otherwise, that the contributions thereunder and/or the investment products purchased pursuant to the plan (i) will not be included in the employee’s taxable income under federal or state law until it is actually received by the employee under the terms of the plan, provided that such contributions will nonetheless be deemed compensation at the time of deferral for the purposes of social security coverage, for the purposes of the Virginia Retirement System, and for any other retirement, pension, or benefit program established by law, or (ii) are designated Roth contributions as defined in § 402A of the Internal Revenue Code of 1986, as amended.