An additional 87 people have been made redundant in Inverness following the collapse of the ROK construction firm.
Subsidiaries in Tulloch Transport and Rok Civil Engineering were placed in administration on Friday, and both have been closed with all jobs lost.
The larger, Exeter-based company was placed in administration last week.
More than 300 people in its plumbing, heating and electrical division have been made redundant across the Highlands, East Kilbride and Dundee.
Administrators PricewaterhouseCoopers said they were continuing to weigh up expressions of interest in the company.
Alan Brown, joint administrator, said: "Due to a number of economic reasons and as a result of little or no interest in these businesses from prospective purchasers, we have regrettably had to take the decision to close these businesses and make the entire workforce redundant."
He added: "The 87 employees impacted will have access to an employee relations helpline and during our discussions with them, have been assured that they will be paid for the period they have worked since our appointment as administrators.
"We are continuing to progress the expressions of interest we have received to date for the remainder of the contracts and business in Scotland and would expect to have further updates over the coming days."