Heat is no longer only a hot-day problem when breaks, evidence, and customer promises meet.
A small installer looking at a hot Thursday is not only checking water bottles and van keys. Two roof jobs are booked. One customer has already moved an appointment twice. The youngest worker is still learning the pace of summer work. The owner can feel the conflict. People need protection. Customers still expect the job.
The signal has to become readable
Article 6.1 of the Arbeidsomstandighedenbesluit says workplace temperature, taking account of the nature of the work and the physical workload, may not harm employee health. Dutch law uses a work-specific health test, not one universal maximum temperature.
Article 5 of the Arbeidsomstandighedenwet brings the issue into the RI&E, the written risk inventory and evaluation. The RI&E must describe work risks, measures to limit them, risks for special categories of employees, and a plan of approach with measures and timing. When heat keeps changing the working day, it does not belong only in the owner’s head.
The roster is where the duty lands
Nederlandse Arbeidsinspectie treats heat stress as an explicit work risk, outdoors and indoors. It names reduced performance, reduced concentration, heat radiation, heat accumulation, and heat illnesses. Employers must inventory the heat risk and take suitable measures. The Inspectorate points to a heat policy, shorter working time, sufficient breaks, and cooling as possible measures.
Those words look neat on a page. On the floor, they change capacity. The installer who starts earlier may avoid the worst roof heat, but the second job may move. Extra breaks can protect concentration, but they can also push an invoice into next week. A cooler pause is still time that must be planned.
In its 2024 hittestress exploration, the Inspectorate carried out 28 exploratory inspections and interviewed 28 employers and 29 employees. About two-thirds of the interviewed employers said they had policy or agreements for work under high outdoor temperatures. Yet in many cases, the underlying heat risks had not been properly mapped. Half of the interviewed employers had not mapped the risks properly.
What the signal changes
That signal is useful. A heat protocol can run ahead of the real work. If the document says take breaks, but nobody has looked at the roof, the kitchen line, the warm warehouse, the delivery route, protective clothing, or recovery time, the paper is doing too much of the talking.
Capacity is part of the compliance question
PBL placed heat inside a wider Dutch climate-adaptation problem in 2026. It said the Netherlands is not yet sufficiently prepared for the consequences of climate change, and that heat, drought, and water nuisance will more often affect health, the living environment, and the economy. PBL also links heat to lower labour productivity.
That matters because small employers do not carry much spare capacity. CBS reported employee sickness absence of 5.8 percent in the first quarter of 2026, the same as a year earlier and above the long-term average of 5.0 percent since 1996. At companies with fewer than ten employees, absence rose from 2.6 percent to 2.8 percent.
CBS also reported 91 vacancies per 100 unemployed people in the first quarter of 2026, with 378,000 vacancies open at quarter end. UWV expects sickness reports to rise to 452,600 in 2026, after 432,000 in 2025, which was 6 percent more than in 2024.
Those figures describe slack, or the lack of it. A hot day lands inside an already tight payroll and planning system. Extra breaks, slower pace, route changes, postponement, replacement labour, and customer conversations all take room that many small firms do not have.
This is where compliance and margin meet. If the company promises the same output while reducing physical load, pressure moves somewhere else. It may move to overtime, lower quality, delayed service, owner exhaustion, or a harder cash week.
The record should follow the work
A small employer does not need theatrical paperwork. The useful record is simple and concrete. Which tasks are exposed to heat? Which buildings, vehicles, sites, routes, clothing, tools, or physical loads make the risk worse? Who can change the start time, add breaks, rotate work, postpone a task, or move someone to a cooler place?
What founders should check
Article 5 requires the RI&E to be adjusted when experience, changed working methods, changed working conditions, or the state of science and professional services gives reason to do so. That is where recurring heat belongs when it changes the work.
Article 6.1 also matters when temperature or adverse weather can still harm health. Personal protective equipment must then be provided where needed. If that is not enough, working time must be limited or alternated with time in a place where temperature does not harm health.
The Inspectorate’s general arbo guidance says employers must have working-conditions policy, an RI&E, and a plan of approach. It can act and may impose a fine if required arbo policy is absent. That should not turn summer into panic. It should make normal control habits more disciplined.
Vulnerable-worker handling deserves care. The RI&E must pay attention to risks for special categories of employees, but medical detail does not belong in ordinary planning notes. Where personal health factors matter, the company doctor or occupational-health service is the safer route.
A calm summer habit
Return to the installer. At 7.30, the route changes. The roof job moves to the earlier slot. One customer gets a plain call about heat and safety. The crew takes a shaded break, and the owner notes the decision in the planner: forecast, roof exposure, changed sequence, extra pause.
Nobody makes a drama of it. Still, the habit is right. The employer saw the risk before fatigue showed up. The customer promise was adjusted instead of pretending nothing had changed. The worker was protected without making the whole business stop.
Heat at work is moving from seasonal courtesy into ordinary Dutch employer control. Water and fans still matter. So do rosters, recovery, customer timing, cash, evidence, and trust. The best response starts early, while the day can still be changed calmly.
Sources
- CBS source
- Werkgevers moeten beter inspelen op hitte
- Wettenbank – Legal temperature duty at work
- Wettenbank – RI&E and plan of approach
- Nederlandse Arbeidsinspectie – Official Labour Inspectorate heat signal
- Nederlandse Arbeidsinspectie – Labour Inspectorate hittestress exploration
- Nederlandse Arbeidsinspectie – Arbozorg, enforcement and employer responsibility
- Nederlandse Arbeidsinspectie – Current Labour Inspectorate enforcement climate
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The Polder is written for readers who need the Dutch business environment translated into practical meaning. Corrections, source policy and editorial accountability are part of the publication record.
