ClinicalTrials.gg
CompletedNCT02824289SSWUpdated Aug 18, 2026Results posted

Sun Safe Workplaces: A Campaign on Sun Protection Policies for Outdoor Workers Phase I

An interventional study of Sun Safe Workplaces Program and Attention Control in Skin Cancer, sponsored by Klein Buendel, Inc.. Completed at 3 sites in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-18.

Sponsored by Klein Buendel, Inc. · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 6 years 11 months after the study started (first participant enrolled Jul 2009, registered Jun 2016).
Phase
Not applicable
Study type
Interventional
Enrollment
825
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

A sample of local government organizations are recruited to a group-randomized pretest-posttest controlled trial evaluating the effect of a campaign to promote workplace policy and education on sun protection for outdoor workers. Primary outcome is adoption of formal policies and secondary outcomes are implementation of policy and sun protection practices by outdoor workers.

Read the detailed description

Workers in the United States spend large amounts of time on the job, making the workplace a key venue for preventive health programs. A workplace risk that has received limited attention is sun protection, despite the fact 8% of the U.S. workforce (over 9 million workers) work outdoors. The investigators have demonstrated that sun safety education can promote sun protection at work. In this revised application, the investigators propose to systematically study a more comprehensive approach to workplace sun safety that goes beyond employee education to promote institutional change. The investigators will implement and evaluate a proactive campaign to change workplace sun protection policies and promote sun safety to managers rather than individual employees. The investigators will assess whether policy adoption alters organizational operations in public employers rather than the private employers examined in our previous research. The specific aims are to: a) create a campaign comprised of personal contacts, printed materials, and Internet tools and resources (i.e., pubic health communication) to promote workplace sun protection policies to managers at public employers, b) evaluate the effectiveness of the campaign at promoting adoption and implementation of workplace sun protection policies, and c) assess whether policy adoption is associated in increases in workers' sun protection practices. An advisory board of public administrators and health experts has been constituted to advise the investigators on campaign and evaluation procedures. Analysis of public employers' existing policies and practices, additional in-depth interviews with public administrators, information design analysis, and usability testing will be conducted to develop an effective campaign. The campaign will be evaluated in a group-randomized, pretest-posttest controlled design. City and county governments in Colorado will serve as the unit of randomization and analysis. Interviews will be conducted with a sample of administrators at these public employers at baseline, interim posttest (n=6 per employer) and final posttest (n=5 per employer). In a subsequent four-year follow-up, surveys with employees and front line supervisors will assess employees' sun protection practices and workplace actions to support employee sun safety; (2) on-site observations of sun protection actions by the employers (e.g., posters, sunscreen, shade structures) will be documented; and (3) costs of implementing the policy campaign and induced employer costs will be tracked. Public employers will be studied because they employ a sizable number of outdoor workers (but results should generalize to for-profit companies). Outcomes will be evaluated at the employer, administrator, and employee levels. At the employer level, adoption of workplace sun protection policies at pretest and each posttest will be assessed with a protocol for coding written workplace policies (primary outcome measure) that demonstrated high reliability in a pilot study. At the administrator level, policy implementation (secondary outcome), theoretical mediators of adoption and implementation, and individual, organizational, political decision making and program variables that might moderate change will be measured in baseline, interim posttest (halfway through the intervention) and final posttest (end of intervention) surveys. At the employee level, analyses will compare the sun protection practices of employees between workplaces that received the intervention and controls and among workplaces that provided education and adopted policy, provided education only, and control workplaces. Analyses will also determine if the extent of sun protection actions by employers influences employees' sun safety practices. At the cost level, the economic evaluation will estimate the return on investment (i.e., comparison of the estimated program benefits to combined cost elements). The proposed study is significant and innovative because it provides critical information applicable to a wide range of industrial sectors with outdoor workers on a workplace risk that has received scant attention. Determining the effectiveness and return on investment of prevention programs is essential for national and local resource investment.

02

Conditions studied

  • Skin Cancer

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Keywords

  • skin cancer
  • prevention
  • worksite
  • policy
03

In context

Skin Neoplasms

604 studies on the registry are indexed under Skin Neoplasms; 126 are open to participants now.

This study's enrollment of 825 is above the median of 55 across 408 interventional studies indexed under Skin Neoplasms.

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Lead sponsor

Klein Buendel, Inc. is the lead sponsor of 35 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • A local government organization with employees who worked outdoors in at least one of the following service areas: public works, public safety, and parks and recreation,
  • Having a full time executive,
  • Having a population of at least 3000 residents,
  • Being employed at a participating local government organization as a manager
  • Being employed at a participating local government organization in a job requiring outdoor work at least part of the time.

Exclusion criteria

Exclusion Criteria:

  • Organization had participated in the authors' previous occupational sun protection project.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
825 participants (actual)

Study arms

  • Experimental
    Sun Safe Workplaces Program

    Program promoting the adoption of occupational sun protection policies by the local government organization comprised of personal visits with senior managers and in-person training of outdoor workers by research staff over two years.

    Behavioral: Sun Safe Workplaces Program

  • Active comparator
    Attention Control

    Program promoting occupational sun protection practices by employees in local government organizations through two mailings containing educational materials and presentations at state professional meetings by project staff.

    Behavioral: Attention Control

Interventions

  • BehavioralSun Safe Workplaces Program

    The intervention began by sending a Program Announcement Packet and requesting the first face-to-face meeting. At the first meeting, intervention staff covered: 1) Introduction to SSW; 2) Sun Safety Practices in the Workplace; 3) Sun Safety Policy for Outdoor Workers; 4) Sun Safety Policy Adoption; 5) Sun Safety Policy Reinforcement and Maintenance. They presented the SSW Website and a Sun Safety Tool Box. Following the first meeting, the manager scheduled Sun Safety Training by intervention staff with various employee groups. Workplace Sun Safety Materials were sent in four sets (twice a year over two years) for distribution to employees. Research staff made monthly Follow-up Contacts with managers.

  • BehavioralAttention Control

    Research staff sent printed materials on occupational sun safety to local government organizations twice. These included posters with personal protection messages and skin cancer rates, risk assessment brochures, worksite guides, total skin self-examination CD-Rom, the American Academy of Dermatology SPOT bookmark, and a sun safety tip card from the Occupational Safety and Health Administration (OSHA). Staff made presentations on general sun safety topics (not policy) at state professional conferences.

06

What researchers measure

Primary outcomes

  1. Presence of a Sun Protection Policy for Outdoor Workers Score at 2-Year Follow-up

    Project staff coded written workplace policy documents on the presence of 15 "content categories" in three domains: 1) environmental controls; 2) administrative procedures; and 3) personal protection practices. Presence of policy was defined as having one or more policy components present in the written workplace policy documents (value=1) versus no content components present (value=0). Total policy score was calculated by summing the number of policy components in the written documents (range = 0-15). Higher values indicate more comprehensive sun protection policy.

    Time frame: 2 year follow-up

Secondary outcomes

  1. Extent of Sun Protection Policy for Outdoor Workers at Posttest

    Project staff coded written workplace policy documents on the presence of 15 "content categories" in three domains: 1) environmental controls; 2) administrative procedures; and 3) personal protection practices. Extent of policy was defined as the sum of the content components for each policy content component present in the written workplace policy documents (values=0 to 15). Higher score indicates more extensive policy. Posttest values were compared between conditions, controlling for pretest value.

    Time frame: From baseline to 2-year follow-up

07

Results

Posted Aug 18, 2026
Limitations and caveats
The trial was conducted in a state that may have increased relevance of sun safety. Local government organizations do not have a profit motive and may place a premium on employee benefits. Actions taken to implement policies were self-reported by managers, which is open to demand and social desirability biases, but policy scores were based on objective coding of written documents. Failure of some organizations to provide copies of documents at posttest may have caused us to miss policy change.

Participant flow

Participant flow — Overall Study
MilestoneSun Safe Workplaces ProgramAttention Control
Started413412
Completed266257
Not completed147155

Outcome measures

PrimaryPresence of a Sun Protection Policy for Outdoor Workers Score at 2-Year Follow-up

Project staff coded written workplace policy documents on the presence of 15 "content categories" in three domains: 1) environmental controls; 2) administrative procedures; and 3) personal protection practices. Presence of policy was defined as having one or more policy components present in the written workplace policy documents (value=1) versus no content components present (value=0). Total policy score was calculated by summing the number of policy components in the written documents (range = 0-15). Higher values indicate more comprehensive sun protection policy.

Time frame:
2 year follow-up
Reported as:
Least squares mean · scores on a scale
Presence of a Sun Protection Policy for Outdoor Workers Score at 2-Year Follow-up
scores on a scaleSun Safe Workplaces ProgramAttention Control
Presence of a Sun Protection Policy for Outdoor Workers Score at 2-Year Follow-up2.68 ± 0.240.59 ± 0.11
SecondaryExtent of Sun Protection Policy for Outdoor Workers at Posttest

Project staff coded written workplace policy documents on the presence of 15 "content categories" in three domains: 1) environmental controls; 2) administrative procedures; and 3) personal protection practices. Extent of policy was defined as the sum of the content components for each policy content component present in the written workplace policy documents (values=0 to 15). Higher score indicates more extensive policy. Posttest values were compared between conditions, controlling for pretest value.

Time frame:
From baseline to 2-year follow-up
Reported as:
Mean · scores on a scale
Extent of Sun Protection Policy for Outdoor Workers at Posttest
scores on a scaleSun Safe Workplaces ProgramAttention Control
Extent of Sun Protection Policy for Outdoor Workers at Posttest4.26 ± 0.381.35 ± 0.30

Adverse events

Collected over Three years. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Sun Safe Workplaces Program0/413 (0%)0/413 (0%)0/413 (0%)
Attention Control0/412 (0%)0/412 (0%)0/412 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Sun Safe Workplaces ProgramAttention ControlTotal
Mean47.6 ± 10.3347.6 ± 10.3347.6 ± 10.33
Sex/Gender, Customized
Sex/Gender, Customized(Participants)Sun Safe Workplaces ProgramAttention ControlTotal
Sex — Male9393186
Sex — Female304304608
Sex — Unknown161531
08

Study locations

3 sites
  • Kaiser Foundation Research Institute
    Oakland, California 94612-3466, United States
  • University of Colorado Denver
    Aurora, Colorado 80045-0508, United States
  • Klein Buendel, Inc.
    Golden, Colorado 80403, United States
09

References and documents

Publications

  • Walkosz BJ, Buller DB, Andersen PA, Wallis A, Buller MK, Scott MD. Factors Associated With Occupational Sun-Protection Policies in Local Government Organizations in Colorado. JAMA Dermatol. 2015 Sep;151(9):991-7. doi: 10.1001/jamadermatol.2015.0575. PubMed 25993051 ↗
  • Wallis A, Andersen PA, Buller DB, Walkosz B, Lui L, Buller M, Scott MD, Jenkins R. Adoption of sun safe workplace practices by local governments. J Public Health Manag Pract. 2014 Nov-Dec;20(6):608-16. doi: 10.1097/PHH.0000000000000026. PubMed 24231670 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 18, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02824289
Collaborators
University of Colorado, Denver, Kaiser Foundation Research Institute, National Cancer Institute (NCI)
Responsible party
Sponsor
First posted
Jul 6, 2016
Start date
Jul 1, 2009
Primary completion
Apr 30, 2015
Completion
Dec 31, 2015
Results posted
Aug 18, 2026
Last update
Aug 18, 2026

Study contacts

David B Buller, PhD
principal investigator · Klein Buendel, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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