Migrant workers group Transient Workers Count Too renewed its calls for workers to be ferried in buses and not lorries.
It said in a statement to the media on Tuesday that Sunday's crash which left a pick-up truck on its side and nine construction workers injured could have resulted in less serious injuries if the workers had been transported in a bus.
"If they had been in a bus, it is unlikely that the passengers would have been flung out of the vehicle. There might still have been injuries, but most likely minor," said TWC2.
The group said it had previously urged the Land Transport Authority (LTA) to require workers to be transported in buses rather than lorries. It added that in light of this horrific accident, the LTA should give serious consideration to this proposal.