Construction company issued stop work order at HDB site during height of haze

File photo of construction of HDB's Waterway Terraces. Tiong Seng has also provided all workers with N95 masks and conducts daily briefings on the haze situation.

SINGAPORE - Company director Derick Pay told reporters that the PSI level was around 400 at noon on Thursday. The company ceased work to protect the health of the over 500 construction workers at the Punggol site.