This article examines 20 listed companies involved in heatstroke prevention through measurement, cooling, workwear and replenishment, and outlines the 2025 requirements and the approach taken in the 2026 guidelines that underpin on-site implementation. It also introduces Smartfit for work and infrared thermography as specific examples.
This article presents heatstroke prevention as comprising 4 process stages and identifies 20 listed companies involved in each. It sets out measurement and assessment of heat concentration, creating environments that release heat, and providing replenishment and rest close at hand as elements of on-site operations. It conveys the view that safety cannot be ensured simply by purchasing a single product, and that countermeasures need to be designed by combining multiple elements.
The requirements introduced in 2025 and the guidelines for 2026 establish a framework that prioritizes early detection and appropriate responses during hot-weather work. They emphasize the need to combine environmental measurement, changes to working conditions, equipment, clothing choices and health management. When measuring the effectiveness of implementation, it is necessary to assess separately not only reductions in thermal risk, but also on-site operating data and whether appropriate response actions are being carried out.
Specific examples include Smartfit for work from KURABO INDUSTRIES LTD., announced in June 2026, which continuously measures the temperature inside clothing, and an initiative by Nippon Avionics that uses infrared thermography to visualize heat sources and movement paths. These are positioned as tools for heatstroke prevention, but attention is required regarding the assumptions underlying data interpretation and the verification of effectiveness after implementation. No simple conclusion can therefore be drawn regarding their contribution to sales.