July used to mean lighter workloads, quieter inboxes, and no major projects until autumn. Now, it can also mean heat alerts. Rising temperatures are changing the workplace conditions, especially for hybrid teams. While some may be in air-conditioned offices, others are working from stifling apartments, commuting in extreme heat, or trying to focus after a sleepless, humid night. Summer heat can affect sleep, routines, mood, and exercise habits. Learn who is at risk, and how to help hybrid employees stay healthy and productive all summer long.
Heat Is Becoming a Workplace Issue
Hotter summers are now part of the business environment. The World Meteorological Organization reports that 2015 through 2025 was the hottest 11 -year period, and 2025 is among the three warmest years ever recorded.
In fact, the World Health Organization classifies heat as an occupational health hazard. It can exacerbate chronic conditions like cardiovascular disease, diabetes, asthma, and mental health challenges.
While heat has traditionally been a concern for outdoor workers, it can also affect other employees. Not every employee works in a traditional, climate-controlled office. Some may be in home offices, shared spaces, vehicles, or older buildings without adequate air conditioning. OSHA’s heat exposure guidance reflects that reality by addressing both outdoor and indoor heat risks.
Even employees who do not do physical work can feel the effects of heat. Research shows that extreme heat can reduce cognitive function, and hotter nights can lead to shorter, poorer -quality sleep.
Why Heat Affects Employees Differently
Heat stress can affect workers of any age, but certain factors may put some employees at higher risk. Older workers, those with chronic health conditions, a higher BMI, and anyone taking certain medications can find it harder to cope with extreme heat. These risks can increase further when employees:
- Perform physically demanding tasks that generate internal body heat
- Work outdoors in direct sunlight or high humidity
- Work indoors in poorly ventilated or heat-retaining environments
- Wear protective clothing or equipment that traps heat
- Work long shifts, have limited rest breaks, or return to hot conditions after time away
Physical fitness can also play a role. OSHA identifies lower physical fitness as a risk factor for heat-related illness. Conversely, employees with better aerobic fitness adjust to hot environments more quickly and regulate their body temperature more efficiently. However, fitness does not eliminate the risk of heat. Even healthy, active employees can have trouble during extreme heat.
Practical Ways to Reduce Heat Strain
To help reduce heat strain and lower the risk of heat-related illness, employers can:
- Offer flexible start times when extreme heat is forecast
- Monitor local heat alerts, humidity, and temperature forecasts, especially during heat waves
- Encourage regular hydration, rest breaks, and self-pacing
- Empower employees to stop work or ask for help if they don’t feel well
Heat Can Disrupt Movement, But It Shouldn’t Stop It
Summer heat can make some types of exercise uncomfortable, but staying active is one of the best defenses against heat strain. Exercise supports many of the systems that heat compromises, including sleep, mood, stress, energy, cardiovascular health, and mental focus. For hybrid employees, regular movement can also bring structure to unpredictable workdays.
That doesn’t mean employees should force themselves to exercise outdoors in extreme heat or pursue ambitious fitness goals during a heat wave. This is when wellness plans need to adapt. Short indoor workouts, guided meditation after a poor night’s sleep, quick stretches or mobility breaks between meetings, or a walk during the cooler evening hours can help employees maintain healthy habits without adding extra stress.
Aaptiv: Wellness That Works in All Temperatures
Employers can’t control every home office, commute, or heat wave. But they can provide employees the tools to build flexible, heat-aware wellness routines. With short on-demand workouts and personalized fitness plans, Aaptiv gives employees options that fit their schedules and locations, no matter the temperature.
Learn more about Aaptiv employee fitness and wellness solutions.
