How Do You Know If a Wellness Program Is Working?
Track a wellness program like any operational function: PTO use, workers' comp claims, participation by role, retention and exit interviews. Then make the case.
You know a wellness program is working when you track it the way you track any other operational function: PTO and sick leave usage, workers' compensation claims, who is participating (especially in your highest-risk roles), retention, and the themes that come up in exit interviews. Set a baseline before launch, review the same numbers on a schedule, and you have both your answer and your business case. A program that is never measured is a program leadership cannot defend at the next budget cycle.
Why is wellness so hard to defend at budget time?
Because most wellness spending is never measured, so it gets treated as a soft-skills expense instead of a retention strategy. When the budget tightens, the line item with no numbers behind it is the first one questioned.
There is a harder truth too. Generic wellness programs have not held up well when researchers test them. In a randomized trial at 160 worksites of a large U.S. warehouse retailer, a standard program produced some better self-reported habits but no significant differences in absenteeism, job tenure or job performance after 18 months. A randomized study at the University of Illinois found no significant causal effect on total medical spending, and found that the employees who signed up were already healthier than those who did not.
That does not mean wellness cannot work. It means a broad program offered to everyone and measured by nothing is hard to tell apart from no program at all. Measurement is what separates the two.
What should you measure?
Start with numbers your organization already collects. You do not need a new system to begin, you need a baseline and a schedule.
| Metric | What it tells you | Where it usually lives |
|---|---|---|
| PTO and sick leave usage | Whether people are recovering, or burning out and calling out | Payroll or HR system |
| Workers' compensation claims | The physical and stress-related cost of the work | Risk management or your insurer |
| Participation by role | Whether the program reaches the people carrying the most risk | Program records, vendor reports |
| Retention and resignations | Whether people are staying, and which roles are leaving | HR system |
| Exit-interview themes | Why people leave, in their own words | HR, if exit interviews happen |
| Overtime and coverage costs | What vacancies cost the people who stay | Payroll |
| Substitute usage (schools) | Absence patterns and coverage strain | District HR or substitute system |
What should you not count as proof?
Attendance at a single event, app downloads and satisfaction surveys are easy to collect and easy to misread. A full room at an annual training tells you people showed up once. A download count tells you nothing about whether anyone opened the app a second time. A satisfaction score tells you people liked something, not whether it changed what happens to them.
Those numbers are fine to keep. They just cannot carry the business case on their own. Leadership will ask what changed in leave, claims and retention, so those are the numbers to have ready.
Why participation by role matters more than total participation
Total participation can look healthy while your highest-risk people never show up. Wellness participation tends to cluster around people who were already engaged. The Illinois study saw exactly that: participants had lower medical spending and healthier habits before the program began.
So break participation down. How many patrol officers, compared with administrative staff? How many litigators, compared with support staff? How many first- and second-year teachers? If the roles with the most exposure have the lowest participation, the program is not reaching the people it was meant for, and no total number will show you that.
How do you build the business case?
Lead with the cost of losing people, not the cost of the program. Gallup estimates that voluntary turnover costs U.S. businesses $1 trillion a year, and that replacing one employee can cost one-half to two times that employee's annual salary. The same Gallup analysis found that 52% of employees who left voluntarily said their manager or organization could have done something to keep them.
Then build the case with your own numbers:
- Count last year's departures in your highest-risk roles.
- Price each one. Include recruiting, hiring, training and onboarding, plus the overtime or coverage paid while the seat was empty.
- Add the costs that do not show up on a line item. Lost institutional knowledge, the strain on the people who covered the gap and the risk that one of them leaves next.
- Compare the total to the program cost. If preventing one or two departures covers the investment, that is the core of the case.
- Commit to the metrics above, so next year's conversation starts from data instead of from scratch.
A business case built this way is a budget conversation, not an admission of a problem. That matters to a managing partner facing a skeptical partnership, a chief facing city council, or a district HR leader facing a school board.
How long before you can tell?
Expect to look at trends over a year or more, not weeks. Participation shows up first. PTO, claims and retention move more slowly, and one year of data is a starting point rather than a verdict. The randomized trial above measured at 18 months, and its authors noted that their findings should temper expectations about short-term financial return.
That is not a reason to wait. It is a reason to set the baseline now, so a year from now you are comparing against something.
What if the numbers do not move?
Then the measurement did its job. Flat numbers tell you to look at who is participating, whether the program was brought to people in person or simply announced, and whether it addresses the risk your people carry. Adjusting a program based on its own data is how a program improves. Without the data, the only option at budget time is to keep it or cut it.
Frequently asked questions
What is the ROI of a workplace wellness program?
It depends on the program, and generic programs have shown weak returns in randomized trials. The most defensible way to judge ROI is to compare the program's cost with the cost of the departures, claims and absences it is meant to reduce, using your own organization's numbers.
What metrics should a wellness program track?
Track PTO and sick leave usage, workers' compensation claims, participation by role, retention, exit-interview themes and overtime or coverage costs. Schools can add substitute usage.
How do you measure wellness without violating employee privacy?
Use aggregate numbers, not individual records. Participation counts by role, total claims and department-level leave patterns tell you whether a program is working without identifying anyone.
Who should own wellness program metrics?
The same named person who owns the program. They should report on the same metrics on a set schedule, the way any other operational function reports.
Tracking is built into every engagement with PIF Samaritan Services, Karen Hurley's wellness program consulting practice. The program plan sets the metrics and the baseline, and the Wellness Program Assessment produces the numbers you need before the funding conversation. You can also book a conversation with Karen.
Sources
- McFeely, S., and Wigert, B. "This Fixable Problem Costs U.S. Businesses $1 Trillion." Gallup, March 13, 2019. gallup.com.
- Song, Z., and Baicker, K. "Effect of a Workplace Wellness Program on Employee Health and Economic Outcomes: A Randomized Clinical Trial." JAMA, 2019. PubMed.
- Jones, D., Molitor, D., and Reif, J. "What Do Workplace Wellness Programs Do? Evidence from the Illinois Workplace Wellness Study." Quarterly Journal of Economics, 2019. Summary: National Bureau of Economic Research.
