C.R.S. § 31-31.5-308
31-31.5-308. Increased local voluntary contribution requirements
31-31.5-308. Increased local voluntary contribution requirements. (1) Active members may make additional after-tax contributions to the money purchase component account under part 5 of this article 31.5. Voluntary member contributions are not subject to the employer pick-up provisions of section 414 (h)(2) of the federal "Internal Revenue Code of 1986", as amended.
(2) Employers may make additional contributions to the money purchase component account under part 5 of this article 31.5 on behalf of members. Employer voluntary contributions vest on the schedule established in section 31-31.5-501.