260 jobs to go at electronic firm Jabil in Livingston
The US-based company has announced plans to shut down its manufacturing operations.
Jabil intends to wind down manufacturing at its Livingston site, with operations ceasing by the end of this year.
The firm said ''unsustainable current and future demand'' lay behind the decision.
Almost 100 support-based employees will continue to work at the site. Its plant in Ayr is not affected by the announcement.
The decision comes less than two years after Jabil announced it was investing £12.5 million in its Livingston operation, creating more than 200 jobs.
At the time, Jabil was described as the world's third-largest electronic manufacturing services provider, operating across multiple sites globally, and providing services to brands in the aerospace, automotive, computing, consumer, defence, healthcare and communications industries.
In a statement released on Thursday, the company said: ''Following a detailed strategic review of the Jabil Livingston site business plan and future loading requirements, we have concluded that there is unsustainable current and future demand to support the viability of the site.
After careful consideration of all viable options, we are today announcing the commencement of a formal consultation process with our employees, with the intention of a phased rundown of manufacturing at the site.
It is anticipated that manufacturing will cease by the end of calendar year 2017. This announcement is set to impact approximately 260 manufacturing employees.''
The statement went on: ''This announcement is in no way a reflection of the hard work, dedication and loyalty of our Livingston-based employees.
We are committed to supporting them throughout the consultation process and subsequent career search.''