Balfour Beatty will close a number of smaller regional offices as part of its ongoing consolidation programme.
Up to 50 jobs are thought to be at risk as a result of the closures.
Offices in Bristol and the Isle of Wight will shut, while those in Newcastle and Southampton will be “relocated”, according to a source.
Southampton office head Andy Duff and south-west region commercial director Keith Trodd both left the company in the summer.
The closures are part of the firm’s Build to Last programme, put in place by chief executive Leo Quinn in a bid to take £100m out of its annual cost base.
A Balfour Beatty spokeswoman said: “As part of our Build to Last transformation programme, we are proposing changes to our regional construction business to make it leaner, reducing our overheads while maintaining our ability to deliver projects to clients around the UK.”
The Build to Last programme launched in February, with the company revealing in August that up to 400 back office staff had left the company in the first half of 2015.
That news emerged as Balfour Beatty posted a £150m loss for the first six months of the year.
Earlier in the year, Mr Quinn had told Construction News there would be “no wholesale redundancy programme” at the firm.
Meanwhile, Balfour Beatty has won the contract to complete a £104m improvement project on the Norwich Northern Distributor Road (NNDR).
The firm will build the new 19.6 km dual carriageway, including nine new roundabouts, seven new bridges, an underpass and a more complex two-level junction.
Balfour Beatty was awarded the early contractor involvement phase of the NNDR scheme in 2009 and has since then been assisting Norfolk County Council with design development, construction feasibility advice and development of the scheme’s target cost.