Annapolis, Maryland, May 27, 2025 — As summer heat intensifies, Maryland workers are protected by new heat stress standards that took effect in September 2024, mandating extra breaks when the heat index exceeds 90 or 100 degrees. The regulations, enforced by the Maryland Department of Labor, aim to curb heat-related illnesses and deaths following a sharp rise in 2024, when 27 people died and 1,200 visited emergency rooms due to heat exposure, up from nine deaths in 2023.
The standards require employers to provide additional rest periods, access to water, and shade during high heat conditions. They also introduce “acclimatization,” allowing new or returning workers up to two weeks to adjust to intense outdoor heat. This is critical, as over 70% of heat-related deaths occur within a worker’s first week on the job. The rules apply across industries, particularly affecting construction, agriculture, and other outdoor sectors.
Sam Williamson, staff attorney at the Public Justice Center, emphasized the necessity of these regulations. “We know that employers are not going to provide those protections on their own,” Williamson asserted. “Many employers will prioritize profit over their workers. I’ve spoken with workers who, working outside all day, they’re lucky if their employer gives them a small 8-ounce bottle of water that’s been sitting out in the sun.”
The spike in heat-related incidents last year underscored the urgency of these measures. Maryland’s 2024 data showed a threefold increase in heat-related deaths, prompting action to protect vulnerable workers. The acclimatization period addresses the heightened risk for new employees, who are often unaccustomed to prolonged heat exposure. Employers must now monitor heat index levels and adjust work schedules accordingly.
Williamson stressed that enforcement is key to the standards’ success. “I’m hoping that now, with these heat standards, employers will start to actually be following these better practices,” Williamson noted. “Really, what I’m hoping is to see good enforcement by the Maryland Department of Labor. Because without good enforcement, unfortunately I don’t think we’ll see employers make a good switch.”
Workers who believe their employers are not complying can file complaints with the Maryland Department of Labor. The department has outlined procedures for reporting violations, ensuring workers have a mechanism to hold employers accountable. Noncompliance may result in fines or other penalties, though specific enforcement actions remain under development.
The regulations reflect a broader push to address climate-driven challenges in Maryland, where rising temperatures have increased risks for outdoor workers. The state’s initiative aligns with federal efforts by the Occupational Safety and Health Administration to develop national heat standards. Maryland’s proactive approach positions it as a leader in worker safety amid worsening summer conditions.
For workers, the standards offer critical protections. Access to adequate hydration, rest, and shade can prevent heat exhaustion and heatstroke, conditions that have surged in recent years. The acclimatization process further reduces risks by allowing gradual adaptation to high temperatures. As Maryland braces for another hot summer, these measures aim to save lives and reduce hospital visits.
Workers are encouraged to report violations promptly to ensure compliance. The Maryland Department of Labor’s website provides resources for filing complaints and understanding the new standards. With robust enforcement, the state hopes to set a model for protecting workers from extreme heat.
