What does 100% tie-off mean?
It is an industry term for staying connected to a fall arrest anchor at all times while exposed to a fall, typically by using a twin-leg lanyard so that one hook stays attached while the other is moved. The Work at Heights Regulations do not use the phrase, but they require fall arrest equipment to be suitable, anchorages to be inspected each shift, and industrial rope access to use two independent lines. Owners should ask how continuous attachment is achieved at every transition point.
From the RRD Field Guide, checked against the sources cited in Work at Height Law in Singapore: Owner, Occupier and MCST Liability Explained. General information, not advice for your project.
The fuller picture
In Singapore, anyone who controls premises (the occupier), employs workers, or engages contractors (a principal) carries duties under the Workplace Safety and Health Act 2006. The Work at Heights Regulations 2013 require guard-rails where a fall exceeds 2 m and a permit-to-work in factories, including construction worksites, where a fall exceeds 3 m. Breaches can cost up to S$50,000 per regulation offence.
More questions on this topic
- Is an MCST legally responsible if a contractor's worker falls from the roof?
- At what height do I need a permit-to-work in Singapore?
- What is the difference between a fall prevention plan and a permit-to-work?
- Does bizSAFE Level 3 prove a contractor is safe to work at height?
- What happens after a serious fall at my building?
- Can an MCST transfer all safety liability to the contractor by contract?
- Are the penalties for work at height breaches higher now?