Three workers dead after steel beam screws snap at TSMC Kaohsiung site

Three construction workers died and a fourth was injured after a steel beam's fixing screws snapped at TSMC's plant site in Kaohsiung, Taiwan, causing all four men to fall from height.

The incident occurred at the Kaohsiung facility, one of the locations where Taiwan Semiconductor Manufacturing Company is expanding production capacity outside its established fabrication hubs. The four workers fell after the screws holding a steel beam failed, according to a report by The Standard (Hong Kong).

Three of the four men died. The fourth worker survived the fall. The report did not specify the height of the fall, the exact time of the accident, or the contractors employing the workers.

What failed at the site?

The mechanical cause cited in the report is specific: screws securing a steel beam snapped. That failure point distinguishes the incident from falls caused by missing guardrails, harness failure or scaffolding collapse — the more common triggers in construction-site falls.

Screw or bolt failure in structural steelwork can result from several factors, including improper torque during installation, substandard fastener material, fatigue, or loads exceeding design specifications. The report did not state which of these factors, if any, investigators have identified.

Structural-steel fasteners on large industrial projects are typically subject to installation records, torque verification and inspection sign-off before loads are applied. Whether such verification took place on this beam is not stated in the available reporting.

What does this mean for the Kaohsiung build-out?

Kaohsiung is a major element of TSMC's capacity expansion in southern Taiwan. The site hosts large-scale construction work, which places thousands of workers on structural steel, cranes and elevated platforms across multiple phases.

A fatal accident involving structural failure — rather than individual worker error or a fall-protection lapse — raises questions that go beyond personal protective equipment. If fixing hardware on one beam failed, the verification regime for installed steelwork across the site is the natural next question for investigators and for TSMC's contractors.

The Standard's report did not state whether construction at the site has been halted, whether other beams are being inspected, or which authority is leading the investigation.

Who is accountable?

In Taiwan, fatal workplace accidents trigger investigations by labor authorities, who can order work stoppages, issue fines and refer cases for criminal prosecution where negligence is found. Contractors and subcontractors bear primary legal responsibility for site safety; the site owner's liability depends on contractual arrangements and on what oversight duties apply.

The Standard's report did not name the contractors involved in the beam installation or the identities of the deceased workers.

What happens next?

The open questions are concrete. Investigators will need to establish the fastener specification, the installation records, the inspection history of the beam, and the load it carried at the moment the screws snapped. The surviving worker's account, once available, will carry significant evidentiary weight.

For TSMC, the accident puts a human cost on a construction program the company has pursued at speed. The chipmaker has not, according to the available report, issued a public statement on the incident.

Three men dead and one injured is the figure that will frame every subsequent answer.

Amara Osei