Sun Exposure and Cancer Outcomes (Incidence, Treatment, Survivorship) in Outdoor Workers

July 2026 | Volume 25 | Issue 7 | 9473 | Copyright © July 2026


Published online June 12, 2026

Samantha Kalner BSa, Irene Vergilis MD FAADb

aSUNY Upstate Medical University, Syracuse, NY
bNew York Medical College, Valhalla, NY

Abstract
Outdoor workers in the Western United States (US), such as farm laborers, landscapers, and construction crews, face daily sun exposure far above safe limits, often up to ten times more than indoor workers, placing them at high risk for non-melanoma skin cancers and melanoma. Yet, despite decades of evidence, US regulations still do not classify solar ultraviolet (UV) radiation as a workplace hazard. Existing protections, like California’s heat illness rules, address temperature but ignore cumulative UV burden. In contrast, countries such as Australia and Germany treat solar UV as an occupational carcinogen and require employers to provide protective clothing, shade, and worker education. In the US, prevention remains inconsistent, weakened by regulatory gaps, poor data on work-related skin cancers, and barriers such as limited sunscreen use and cultural norms. These shortcomings fall hardest on immigrant and low-wage workers, who often have the least access to protection and care. This population-level occupational health case analysis calls for urgent policy reform to recognize solar UV as a workplace hazard and adopt stronger protections to reduce preventable skin cancer disparities.

INTRODUCTION

Chronic sun exposure is a well-documented environmental health hazard that contributes significantly to the development of skin cancer. Despite this, the impact on outdoor workers in the Western United States (US), who spend prolonged periods exposed to solar ultraviolet (UV) radiation, is underrepresented in both policy and prevention efforts. Construction workers, landscapers, agricultural laborers, and others in outdoor professions often lack sufficient education, protective equipment, and access to early detection services, resulting in preventable disparities in skin cancer incidence and outcomes.

Skin cancer is the most commonly diagnosed cancer in the United States, with non-melanoma skin cancers (NMSC) such as basal cell carcinomas and squamous cell carcinomas accounting for the majority of cases.1 These cancers are particularly prevalent among individuals with occupational UV exposure, yet protections for such workers remain inconsistent and fragmented across regions. While states like California have implemented heat illness prevention standards, comprehensive sun safety regulations specific to skin cancer prevention are rare.2

Literature Synthesis
Outdoor workers in the Western US are exposed to UV levels that regularly exceed occupational safety thresholds, often by 3-10 times compared to indoor workers.3 These workers receive the highest annual UV dose of any group, significantly increasing their risk of NMSC and melanoma.4 Slavinsky et al, 2014 suggest that cumulative occupational UV exposure increases the risk of squamous cell carcinoma by as much as 77%,4 a figure comparable to the significant occupational risk hazards like chemical or particulate matter inhalation.5 Despite these troubling statistics, UV radiation is inconsistently recognized as an occupational hazard in the US, leading to fragmented or absent prevention policies.6

Across global and US-based studies, a consistent pattern emerged where outdoor labor workers, particularly those with careers in agriculture, landscaping, and construction, are regularly exposed to ultraviolet (UV) radiation levels that far exceed state-specific heat safety thresholds.7 Several studies have noted that outdoor workers receive the highest annual UV doses of any occupational group, placing them at considerable risk for non-melanoma skin cancers.4,6 While some regulatory structures, such as California's heat illness prevention rules,8 exist to address extreme heat, they often fail to include the cumulative UV burden. California Division of Occupational Safety and Health (Cal/OSHA) requires employers to implement high heat protection procedures once temperatures exceed 95°F, which include shade breaks, hydration, and monitoring. Despite the step in the right direction, these policies do not classify UV radiation itself as a workplace carcinogen nor mandate sun-safety interventions. Beyond that, no comparable policy exists for cumulative UV burden, despite decades of evidence linking