May 25, 2017 16:47 Updated Follow Yes. You may elect to make pre- or post-tax voluntary contributions to your My Choice: Retirement Savings Plan or Hybrid plan account. The amount may not exceed 10 percent. Related articles What are my retirement account investment options? What are voluntary pre-tax contributions? How do I make voluntary pre-tax contributions to my Annuity Savings Account? What do I need to know about employer contributions for the My Choice: Retirement Savings Plan? What’s the difference between the PERF Hybrid plan and the My Choice: Retirement Savings Plan?