Work at Height Safety Singapore

Work at height safety in Singapore requires a fall prevention plan, trained workers, immediate supervision by a competent person and effective protection at openings where a person could fall more than 2 metres. ISO 45001 gives your business a way to identify those legal requirements, assign competence, control contractor work and review whether site controls are working. On 28 September 2026, a 22-year-old worker died after falling from height at a BTO worksite in Tanjong Rhu while concrete casting was being carried out. MOM and the police are investigating.

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On this page

Legal requirements
Control layers
Permit-to-work
Task controls
ISO 45001 controls
Audit evidence
Common questions

A consultant reviewing work-at-height controls with a construction site team

Key takeaways

A fall prevention plan is required at every worksite where work at height is carried out.
Open sides and openings with a fall of more than 2 metres need effective guard-rails or barriers.
Hazardous work at height means a possible fall of more than 3 metres.
ISO 45001 records legal duties, competence, site controls and compliance checks.

The Work at Heights Regulations set core site controls

Regulation 4 starts with avoidance. Do not carry out work at height where it is reasonably practicable to do the work safely otherwise than at height.

At every worksite doing work at height, the occupier must establish and implement a fall prevention plan. It must follow the approved code of practice and be available to an inspector on request. MOM points contractors to the Approved Code of Practice for Working Safely at Heights.

Core requirements for work at height on a worksite
Requirement	Regulation	What it means on site
Avoid work at height where reasonably practicable	Regulation 4	Consider a safe way to do the work otherwise than at height.
Fall prevention plan	Regulation 5 and First Schedule	Establish and implement a site plan, and keep it available for inspection.
Training	Regulation 6	Workers receive adequate training on hazards and precautions before working at height.
Immediate supervision	Regulation 7	A competent person for that work immediately supervises the work.
Open sides and openings	Regulation 8(2)	Cover or guard a fall of more than 2 metres with effective guard-rails or barriers.

A competent person has sufficient experience and training for the work, and has passed courses the Commissioner may require.

For construction teams, ISO certification for construction businesses connects site responsibilities and records to a management system.

The fall prevention plan records controls for the task and location

WSH Council says the site-specific fall prevention plan includes responsibilities, risk management and control measures, safe work procedures, personal protective equipment, inspection and maintenance, training, incident investigation and emergency response.

Controls named in the regulations and WSH Council guidance
Control	What the rule or guidance says	Source
Avoidance	Do not carry out work at height where it is reasonably practicable to do the work safely otherwise than at height.	Regulation 4
Edge protection	Guard rails, scaffolds and covers protect openings. Guard open sides and openings where a person could fall more than 2 metres.	WSH Council, Regulation 8(2)
Fall restraint or arrest	Where there is a risk of a fall, provide travel-restraint or fall-arrest equipment, secure anchor points and 100% tie-off.	WSH Council advisory, 9 June 2026
Structures and equipment	Use a method statement, trained personnel, supervision, and regular inspection and maintenance that identifies defects for rectification.	WSH Council advisory, 9 June 2026
Supervision and permit	A competent person immediately supervises work at height. For hazardous work at height at a factory, onsite checks take place before permit authorisation.	Regulation 7, Regulations 20 to 22, WSH Council advisory
Risk assessment and follow-up	Conduct adequate risk assessments, check controls are implemented effectively, stop work for unsafe conditions and self-inspect high-risk activities.	WSH Council advisory, 9 June 2026

The WSH Council advisory also names SS 679:2021, Code of Practice for Workplace Safety and Health Management System for Construction Worksites.

For one activity, the record should show the risk assessment, safe work procedure, fall protection selected, inspection and maintenance checks, assigned people and supervisor checks. We review these records when scoping ISO 45001 certification support.

The permit-to-work controls hazardous work at height

Hazardous work at height means work where a person could fall more than 3 metres. At a factory, Regulations 20 to 22 require the occupier to appoint a competent authorised manager and work-at-height safety assessor, and implement a permit-to-work system.

No hazardous work at height may start at a factory without a permit issued by the authorised manager. The supervisor applies for the permit and states the safety measures. The application must show that a work-at-height risk assessment has been done and state the measures to be implemented.

Hazards and measures are recorded
Workers, guided by their supervisor, identify potential hazards and implement the safety measures required by the permit. Work does not start at this stage.
The supervisor submits the application
The supervisor submits the permit application to the work-at-height safety assessor when the permit conditions are met.
The location is checked
The safety assessor and supervisor visit the work location. They verify the permit requirements, and the assessor may recommend additional measures before endorsing the form for the authorised manager.
The authorised manager issues the permit
The authorised manager issues the permit when hazards and risks are addressed, reasonably practicable measures are taken, workers are informed, and incompatible work is not taking place at the same time and location.

After issue, the authorised manager, safety assessor and supervisor monitor the work against the permit. The permit is a documented check of that task and location. It is not a general approval for every high work activity.

Method statements and inspection records apply to structures and equipment

The WSH Council advises companies to establish a method statement with contractors, designers, manufacturers and installers. It covers the safe installation, construction, use, alteration and maintenance of structures and equipment. Supervisors check that the method statement and safe work procedures are followed.

The advisory also calls for trained and competent supervisors and workers for tasks involving specific structures and equipment. Its inspection and maintenance regime identifies wear, damage, corrosion, misalignment or instability, and requires identified defects to be rectified.

MOM's general reminder was that concrete casting equipment has to be inspected before use, work activities must be properly supervised, and measures must be in place to prevent falls when work is carried out at height. This was a general safety reminder, not a finding from the investigation.

Tip: The review record for each task can be matched to the method statement, safe work procedure, training and competence records, inspection and maintenance results, risk assessment and supervisor checks.

ISO 45001 links work-at-height duties to the management system

ISO 45001 certification support helps a contractor put legal duties and site controls into a management system. It does not replace the Work at Heights Regulations or the controls required for a particular task.

Clause 6.1.2 covers hazard identification and assessment of risks. It places the work-at-height risk assessment in the system.
Clause 6.1.3 covers legal requirements and other requirements. It records the Regulations and applicable guidance that the business must consider.
Clause 7.2 covers competence. It supports records for people assigned to work at height, supervise it or assess a permit.
Clause 8.1.2 sets the hierarchy of controls, eliminate, substitute, engineering controls, administrative controls and personal protective equipment. This matches the need to consider avoidance, physical protection and personal fall protection rather than rely on one control.
Clause 8.1.4.2 covers contractors. It sets requirements for how contractor work is controlled when more than one party is involved.
Clause 5.4 covers consultation and participation of workers. Clause 9.1.2 covers evaluation of compliance. Clause 10.2 covers incident, nonconformity and corrective action.

For a construction scope, we map the fall prevention plan, permit forms, method statements, training records, inspection records and compliance checks to the relevant ISO 45001 clauses. This identifies the documents in use and controls to formalise before certification.

An ISO 45001 audit checks records and site controls

An ISO 45001 auditor assesses your system against the standard. An accredited certification body decides certification. The audit examines legal requirements, operational controls, competence records and compliance evaluation for site activities.

The fall prevention plan, including the site-specific controls it sets out.
Risk assessments and safe work procedures for work-at-height activities.
Permit applications, assessor checks, permits issued and monitoring records where the system applies.
Training and competence records for workers, supervisors and people with permit roles.
Inspection and maintenance records for relevant structures and equipment.
Compliance evaluation, self-inspection results, corrective action records and incident review records.

Send us the current fall prevention plan, one or more recent permit forms where they apply, the related risk assessments, method statements, training records and inspection records. We review the scope against the regulations and ISO 45001, then arrange a short call or site visit before giving a written quote.

ISO implementation with ZES starts from $2,288. Certification body audit fees are separate. Your final fee depends on your company size, nature of operations and the scope of work required.

A bizSAFE Risk Management audit covers risk assessment practice. bizSAFE Level 3 support prepares your Risk Management system and audit records. ISO 45001 has separate certification requirements, including the management-system controls described in this article.

Common questions

Is a fall prevention plan required for every worksite?

Yes. The occupier of every worksite where work at height is carried out must establish and implement a fall prevention plan. It must follow the approved code of practice and be available to an inspector on request.

When is a permit-to-work needed for work at height?

Hazardous work at height means a possible fall of more than 3 metres. A permit-to-work system is required for hazardous work at height at a factory, with the roles and process set out in Regulations 20 to 22.

Does ISO 45001 replace the Work at Heights Regulations?

No. ISO 45001 does not replace legal requirements. Clause 6.1.3 provides a system for identifying legal and other requirements, while operational controls must still meet the Regulations.

What does the work-at-height safety assessor check?

The WSH Council process says the assessor visits the work location with the supervisor. They verify that the safety requirements in the permit have been fulfilled before the assessor endorses the permit for the authorised manager.

Does bizSAFE cover work at height?

The bizSAFE Risk Management audit covers risk assessment practice. Your work-at-height controls must still meet the Work at Heights Regulations, including the fall prevention plan and controls for the specific task and location.

How long does ISO 45001 certification take?

Most SMEs are certified in 2 to 4 months with ZES. The timing depends on your company size, nature of operations and the scope of work required.

Sources

About the author

Nachi Leong

Principal Consultant, ZES Consulting · PSCMC, TÜV SÜD

One consultant. From start to finish. The consultant you meet is the consultant who stays with your project.

About Nachi

Work at height safety in Singapore: legal controls and ISO 45001