A Wearable Device Company That Protects Against Heat Injury Finds Its Product-Culture-Talent Fit

A Wearable Device Company That Protects Against Heat Injury Finds Its Product-Culture-Talent Fit

Click here for the full article from Forbes

Dr. Sonia Sousa, a founder of Kenzen, passed away in May of 2018. It was challenging, but the startup moved forward.

Kenzen was in the process of deploying a pilot with an industrial company. That pilot pointed to a new direction for the company—providing a predictive physiological monitoring system, including a wearable device that keeps workers safe from heat, fatigue, and overexertion.

In 2016, Heidi Lehmann, now the CEO of Kenzen, had been brought into the company to guide commercialization and help the company raise equity financing.

With the product-market fit identified, the management team at Kenzen realized that Kansas City, MO., was the best place to be headquartered. The company already had a presence there and it is close to industrial customers. As someone whose professional life was in New York City in digital media then consumer wearables, Lehmann had to find a way to fit in and find others who would, too.

Kenzen focuses on core body temperature, which doesn’t require a biomarker analysis or operating in the regulated market. Both require FDA approval to assess heat injury and illness from core body temperature. The wearable device is non-invasive, not an injectable pill, and not a rectal or esophageal probe. And a wearable device is easily scalable.

“We developed the largest validated data set of core body temperature across the globe,” said Lehmann. “It’s been tested by both genders across different age groups and worksites across the globe. We also recently had our algorithm peer-reviewed and are the only algorithm that accurately predicts heat injury or illness from a wearable.”




  • Climate Technology from Kenzen passes SOC 2 Type 1 audit for keeping industrial worker data secure in the age of the connected worker
  • Just in time for safely monitoring worker health this summer
  • Data privacy will be key to meeting President Biden’s heat rules and OSHA heat standards

KANSAS CITY, MO (March 22, 2022) – On the cusp of new U.S. Federal heat rules and OSHA heat standards for protecting workers as the earth’s temperatures rise to expected new records this summer, Kenzen, makers of climate tech that monitors worker health and wellness in the heat, has achieved its next data security and privacy milestone. Kenzen announces it has passed the System and Organization Controls 2 (SOC 2) Type I audit from the American Institute of Certified Public Accountants. Its technology meets trust services criteria for securing worker data.

The SOC 2 audit was performed by independent accounting firm Sensiba San Filippo, LLP.

SOC 2 is an information security standard based on a thorough examination of controls relevant to the security, availability, processing integrity, confidentiality, and privacy of personal data.


“Kenzen was founded on the worker-centric, ethical platform of keeping individuals’ health data secure,” said Heidi Lehmann, co-founder of Kenzen. “From the beginning, our goal was to set the gold standard in worker privacy for industrial tech. Now climate tech, worker wellness, and worker health disparities are top of mind for the Federal and local governments, regulators, the media, and employers – especially those with large workforces. Rising temperatures are increasing worker injuries and deaths. There’s new urgency to solve the issue, but sound solutions must protect individual privacy.”


Lehmann considers the SOC 2 audit the second privacy milestone for Kenzen. The first was its standard-setting privacy policy that details the type of information collected about a worker, how a worker can opt out of the technology, how long the data is available, and who owns it. The privacy policy is accessible on the Kenzen website and is easy to understand, to ensure all workers understand their rights when monitored with Kenzen’s wearable sensor that detects heat risk to their body. Kenzen collaborated closely with Working Capital Venture Fund, which invests in scalable innovation that meets the growing demand for more transparent and ethical supply chains which protect workers. Working Capital is headquartered in San Francisco, the epicenter of Internet of Things technology, with offices in Washington D.C., where the firm advocates for workers’ rights. Kenzen also partnered with Venable law firm, which is known for its data privacy work.

“Companies no longer need to weigh the benefits of saving lives and gaining productivity against the risk of exposing workers’ personal data in the process. As the business case for worker health gets stronger with rising temps and fatalities, data safeguards must also get stronger,” said Lehmann.

Kenzen wearable monitors collect tens of thousands of data points per worker per shift. The information is used to protect workers from injury on the job and optimize worker health in hot and humid conditions. Three distinct views of data are available:  one for the worker, one for the on-site supervisor, and one for the company’s EHS team. Kenzen’s proprietary algorithms filter data at each level to keep personal, identifiable information accessible only to the worker. When the data indicates a need for an intervention to prevent the worker from overheating, an alert and suggested next steps are sent to the supervisor. At the corporate level, health and safety teams receive anonymized trend information derived from aggregated data, which they use to make decisions to improve safety and productivity at their worksites.


National Centers for Environmental Information and NASA are predicting record temperatures in 2022. July 2021 was the earth’s hottest month ever, with 200 million Americans under heat advisories. Extreme temperatures result in annual losses of two billion labor hours and $162B in wages, with every 10° (F) temperature increase causing a 393 percent uptick in hospitalizations for heat exposure.


About Kenzen

Kenzen is workforce safety technology at the intersection of unparalleled heat science and climate technology. Its physiological monitoring platform protects workforces from heat on the job while providing data-driven insights for improving productivity. The Kenzen solution protects workers throughout the world in a wide variety of industrial sectors. Through research and validation with top universities and use of its system by more than 50 companies, Kenzen has amassed the largest known dataset of continuous core body temperature in the world and has the only peer-reviewed algorithm proven to predict core temperature through a wearable device.

For more information

Contact Beth LaBreche



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Interest in Wearable Tech Heats Up as the World Learns About the Dangers of Rising Temperatures

Interest in Wearable Tech Heats Up as the World Learns About the Dangers of Rising Temperatures

Click here for the full article from Occupational Health & Safety

By Cheryl Lynn Palmer | Mar 01, 2022

Can your company afford not to implement wearable technology as part of its HRI prevention program?


Until now, the world at large wasn’t speculating on the occupational impact of climate change. However, organizations like the Department of Labor, OSHA, NIOSH as well as President Biden, by issuing new heat rules for worksites, are making the issue of dangerous heat impossible to ignore. Heat risk to workers and companies has caught the attention of many organizations and international media because it now kills more Americans than any other weather-related event, and it has been injuring workers quietly for many years.

Wearable technology can detect HRI symptoms that are hard to diagnose on work sites for several reasons:

Symptoms may not exist. Many people who experience HRI state that they “feel fine,” until they get dizzy, pass out and fall down.

Symptoms may be hard to identify. Fatigue and nausea may be misinterpreted as caused by food illness or too much alcohol the previous night. Temperament changes and lack of attention may be attributed to stress or a bad day. Unsteadiness and dropped items may just be simple mistakes. Muscle cramps may be mistaken for overdoing it the day before or a hard workout at the gym. Yet, each of these things are signs of HRI.

Workers may have been incorrectly trained. Research indicates many people believe that, if they are sweating, they are safe from HRI. Workers haven’t been trained to know that this is not true.

Symptoms may impede one’s own ability to self-identify HRI and react. Impaired judgment, disrupted cognitive function, lack of focus, inability to make decisions and poor comprehension could impede a worker’s ability to detect heat risk on the body.

Workplaces may not be watching for HRI. Heat assessment indexes and weather warning systems may not reflect variables specific to workplaces, such as metabolic heat production from work tasks, clothing layers, PPE, heat generated from machines and materials, etc., leaving workers unaware of their risks. Some assessment indexes may even use antiquated versions of heat indicators.

Climate tech innovation to facilitate safe work in hot conditions

Climate tech innovation to facilitate safe work in hot conditions

Click here for the full article from Safety Solutions

Thursday, 20 January, 2022 | 


Record-breaking temperatures in 2021 led to increased worker deaths, from produce pickers to construction crews and garbage collectors. In 2022, tech entrepreneurs have addressed the issue by finding innovative ways to track and prevent the dangers of heat on the body. Heidi Lehmann, a tech entrepreneur whose latest venture Kenzen produces a wearable device that monitors workers’ physiology to predict and prevent heat injuries and deaths, said that progressive employers are already incorporating technology that can track worker wellness. Kenzen has equipped first responders, miners and workers in the construction, energy, steel and manufacturing sectors with sensors that continuously monitor their physiology to assess core body temperature, sweat rate and exertion. Lehmann welcomes legislation that will mandate the care needed for overheated bodies — such as breaks, water and cooling techniques — yet warns that standards should not be ‘one-size-fits-all’. Biological sex, fitness, age, acclimatisation and other individual factors can dictate what each worker needs to stay safe and productive.

“Heat monitoring is key to achieving ‘Total Worker Health.’ Every person has a different threshold for being able to withstand hot temperatures and hot work. Across-the-board mandates will not curb the alarming statistics. Advanced technology for a personalised approach needs to be part of the solution,” Lehmann said.

Kenzen sensors gather thousands of data points per worker per shift. Through research and validation with universities and use of its system by more than 50 companies, Kenzen has amassed a large dataset of continuous core body temperature. The Kenzen device warns workers, via haptic vibration, when their physiology indicates danger of heat stress. Managers get an alert via an app when a worker needs an intervention to stay safe. A second alert indicates when the worker’s body is ready to resume work. Corporate safety leaders can use the analytics dashboard to make enterprise-wide decisions to minimise heat risks, reduce injuries and improve productivity. They may also adjust work schedules or assign certain tasks to individuals. Throughout the process, personal data is protected, as only workers can view their health information while others only see what is necessary to keep workers safe. “Worker heat health is at the forefront of industry in 2022,” Lehmann said.

KENZEN wins Best New Mobile App award

KENZEN wins Best New Mobile App award

Click here to see the award from Best Mobile App Awards



The Kenzen heat monitoring system is for use by industrial companies, such as construction firms, mining operations, agricultural, utilities, and oil and gas worksites. It is a SaaS system that includes a wearable device worn by workers that alerts both the worker and their supervisor when the worker’s core body temperature is too high and he/she is in danger of heat illness or injury, including death. Real-time alerts allow for immediate intervention to keep workers safe and help the company proactively manage its risk and productivity. Data also informs Environmental Health and Safety (EHS) leaders’ decisions to enhance heat safety across the company.

The Kenzen wearable sensor monitors multiple individual physiological and environmental metrics, including heart rate, sweat rate, exertion levels, and microclimate. It also stores an individual worker’s heat susceptibility and hydration needs based on the factors that affect a person’s tolerance to heat, which include gender, age, health conditions, prescriptions taken, and more. Together, this data allows for accurate prediction of heat stress for workers and the prevention of heat-related injuries and fatalities.

The Kenzen system monitors core body temperature, the greatest predictor of heat stress and illness, and alerts workers via smart phone notifications and supervisors via web dashboards when a worker should take a break to avoid heat-related injuries. The system makes recommendations on how to treat heated workers and a second alert indicates when the worker’s temperature has returned to a safe level to return to work.

Tens of thousands of data points collected per worker per day help companies manage heat risk by location and job role, and adapt worksites to improve safety while maximizing productivity. Modifications may include changes to work-rest schedules, hydration and shade stations, air-conditioned rest areas, and ice-bath locations. The data can also inform decisions about appropriate use of equipment and clothing to reduce heat injuries.

The three views of data were designed by Kenzen to protect workers’ private health information.

The Kenzen system is currently being used throughout the world to keep people safe on the job.