Haze readiness checklist

Site: ______________________ Date: ____________ Checked by: ______________________

01Before haze arrives

Haze plan written, with named criteria for restricting and stopping outdoor work. MOM haze guidance; DOSH 2026 s.2
Vulnerable workers identified: older and pregnant workers, and those with heart or lung disease. MOM haze guidance; DOSH 2026 s.2
Outdoor jobs to reduce or reschedule listed in advance. MOM haze guidance
Risk assessment covers haze, including poor visibility. Brunei 2026/WSHN/04
N95 or equivalent masks in stock. Singapore: at least one week's supply if people work outdoors. MOM haze guidance
Outdoor workers fit-tested for their masks and trained to wear them. MOM haze guidance; DOSH 2026 s.5
Air cleaning devices checked and working.

02Every day during haze

Forecast checked to plan tomorrow's outdoor work.
Hourly readings checked through the shift by a named person.
Crew told today's level and what it means for their work.
Risk assessment reviewed if readings, weather or the work changed. Brunei 2026/WSHN/04

03Outdoor work

Strenuous and prolonged work cut back to match the level.
Vulnerable workers moved or kept indoors as the level requires.
Mechanical aids and job rotation used to reduce effort.
Indoor rest breaks and drinking water arranged. Heat stress controls running too.
Non-essential outdoor work deferred at the highest levels.
Malaysia: construction sites sprayed with water at API 101 to 200. Earthworks stopped at API 201 to 300. DOSH 2026 Table 1

04Masks

Everyone who must work outdoors at the required level has a fitted mask.
Masks changed when soiled or damaged, or when breathing gets hard.
Pace slowed and extra breaks given for mask wearers.
Anyone struggling to breathe in a mask moved to indoor work.
Goggles available for eye irritation.

05Visibility and indoor air

Tower and mobile crane lifts risk-assessed for poor visibility before they go ahead.
Vehicle movements and work at height reviewed when visibility drops.
Windows and doors kept closed most of the time.

06Communication and health

Workers know how to report symptoms, and who to tell.
Anyone with symptoms or breathing trouble moved and sent for medical attention.
Workers updated regularly on what the site is doing about haze.

Legal requirement

Employers must protect workers under the WSH Act in Singapore and Brunei and OSHA 1994 in Malaysia. In Singapore, MOM may issue stop-work orders and composition fines if haze risks aren't reduced adequately. In Malaysia, DOSH may order work to stop where haze poses immediate danger.

Sources and further reading

Additional guidance on 1-hour PM2.5 readings (20 October 2026), Ministry of Manpower.
Guidelines on protecting employees from haze, Ministry of Manpower.
Haze guidelines, 2nd edition, 2026, DOSH Malaysia.
2026/WSHN/04: Precautions during hazy conditions, SHENA Brunei.

This is practical guidance, not legal advice. Laws and codes of practice change; always check the current official text and your site's own procedures.

Haze readiness checklist

01Before haze arrives

02Every day during haze

03Outdoor work

04Masks

05Visibility and indoor air

06Communication and health

Sources and further reading

Related reading

Haze at work: what supervisors need to know

Toolbox talk: working in haze

Workplace safety compliance checklist: UAE