Up to 200 jobs are at risk after four companies within a leading construction business are set to go into administration.
Staff at Lagan Construction Group were made aware of developments on Tuesday morning.
A memo, seen by the BBC, said the business had been "significantly impacted" by delays and disputes involving several of its projects.
The company said the announcement was made with "great sadness".
The four companies impacted by the move are - Lagan Construction Group Holdings Limited, Lagan Construction Group Limited, Lagan Building Contractors Limited and Lagan Water Limited.
It is understood that all other companies within the Construction Group are continuing to trade as normal.
'Great sadness and reluctance'
The group's boss, Michael Lagan, said in the memo to staff: "The difficulties which have arisen within the Civils and Building divisions has meant that the directors of the affected four companies have no option but to immediately serve notice on the court to appoint an administrator.
"It is with great sadness and reluctance that the group had to take this course of action.
"Up to 200 employees may be affected by this announcement.
"I hope that some of those jobs could be transferred to joint venture partners whilst others may be relocated to divisions within the group."
The memo added that workshops would be held later this week to "discuss what the process entails for those who are employed in the affected companies".
“Thank you very much BCC for the very impressive office refurbishment you have done for us. With experience in suspended ceilings and partitions your advice helped us to make the right choices for what we needed. The whole project was made very easy for myself.”
“We have used BCC a number of times and they deliver a very quick turn around but not sacrificing a very high standard of work. We will definitely continue to use BCC."