From the BBC:
Rudi Klein, head of Specialist Engineering Contractor, an umbrella group representing suppliers to the construction industry, said Carillion outsourced virtually all its work.
He said the government knew of Carillion's reliance on sub-contractors, but continued to award the company lucrative work despite growing concerns about its finances.
"It's that supply chain who is going to bear the massive loss," he said. "There could be a large number of firms that will experience substantial financial distress."
... and presumably their chicks for free, although that is not expressly stated.