The limit
A "day" is more than 4 hours. Days of 4 hours or less count by the hour: add those hours up and divide by 6.5454. Working After Retirement, definitions (PDF p. 2); pp. 1-3
PERA's example: Janet works 60 long days and 90 hours on short days. 90 ÷ 6.5454 = 13.75, so she has used about 74 days (our engine: 73.75). Working After Retirement p. 1, Workday Limit Definition, Example
Our examples: 108 long days and 30 short-day hours is 112.58 days: 3 days over the 110-day limit, so 15% off a later month's benefit (5% a day). A designated retiree with 130 days and 40 hours is at 136.11, under 140.
Designated retirees and critical shortages
School/DPS Division employers (and state colleges) may designate up to 10 retirees a year (plus one per 1,000 students over 10,000) to work up to 140 days/916 hours for that employer; school-district designations are limited to six consecutive calendar years beginning January 2025. Designation must be reported by September 1. Working After Retirement, definitions (PDF p. 2); pp. 1-3
Rural school districts, their charter schools, and BOCES may declare a critical shortage for listed roles (including teachers); a designated retiree has no limit for that position for up to six consecutive calendar years, gets no PERACare subsidy, and if retired with a reduced benefit must wait two years to return to the same employer in that position. Working After Retirement, definitions (PDF p. 2); pp. 1-3
Your first month
Working or volunteering for a PERA employer on the first business day of the effective month invalidates/delays retirement. Working for a PERA employer in your retirement month cuts your benefit by 5% for each day or part day. Working After Retirement, definitions (PDF p. 2); pp. 1-3
Working retirees pay working retiree contributions at the regular member rate; they earn no added benefit and can't be refunded. Not reporting excess days by March 31 adds a penalty at PERA's assumed rate of return (7.25%) per day of nondisclosure. Working After Retirement, definitions (PDF p. 2); pp. 1-3
PERA's booklets describe no DROP program; working after retirement is how retirees go back to work. Rules are in state law at C.R.S. 24-51-1101
From the sources
- You can work for a PERA employer up to 110 days or 720 hours per calendar year without losing benefits. A 'day' means more than four hours of work.Working After Retirement p. 1, Workday Limit Definition
- To combine short days with long days, divide your hours on short days by 6.5454. In PERA's example, 60 long days plus 90 short-day hours comes to 74 days, under the limit.Working After Retirement p. 1, Example
- Each day over the limit cuts a later month's benefit by 5%. Working for a PERA employer during your first month of retirement cuts your benefit by 5% for each day or part day worked.Working After Retirement pp. 1, 3
- Don't work or volunteer for any PERA employer on the first business day of your retirement month. Doing so can cancel or delay your retirement.Working After Retirement, definitions (Termination); p. 1
- School districts can designate up to 10 retirees a year, plus one per 1,000 students over 10,000, to work up to 140 days or 916 hours for that district. Since January 2025, a school district designation is limited to six consecutive calendar years.Working After Retirement p. 2
- Rural school districts, their charter schools and BOCES can declare a critical shortage of teachers and other listed roles. A retiree hired into such a role has no work limit for that job for up to six consecutive years, but gets no PERACare subsidy. A reduced-benefit retiree must wait two years before returning to the same district this way.Working After Retirement p. 2
- Working retirees pay contributions at the regular member rate. Those contributions don't add to your benefit and can't be refunded.Working After Retirement, definitions (Working Retiree Contribution)
Questions
How many days can a Colorado PERA retiree work?
Up to 110 days or 720 hours a calendar year for PERA employers, without losing benefits. A "day" is more than 4 hours of work.
What happens if I go over?
Each day over the limit cuts a later month's benefit by 5%.
Can a school district let me work more?
Yes. A school district can designate a small number of retirees to work up to 140 days or 916 hours for that district. Rural districts with a critical shortage can hire some retirees with no limit for that job.
Can I work in my first month of retirement?
Avoid it. Working for a PERA employer in your retirement month cuts your benefit by 5% for each day or part day, and working on the first business day can cancel or delay your retirement.
Source: Your PERA Benefits: A Summary of the Colorado PERA Defined Benefit Plan, Revised April 2026. Also: Working After Retirement pp. 1, 1-3, 2; C.R.S. 24-51-1101. Last reviewed .