Unite held crisis talks with bosses yesterday in a bid to halt plans, revealed by the Evening Times, to cut more than half the workforce at the Philips lighting factory in Hamilton.
The union is calling for work that was outsourced to Poland to be returned to the Hamilton plant and has asked for a meeting with one of the owners of the Holland-based firm.
It is also calling on the Scottish Government to intervene and safeguard some of the jobs.
The Scottish factory, the company's main UK lighting manufacturing site, specialises in producing street lights and lighting fixtures.
Of the lines made in Hamilton, a third are to be discontinued with production of the remainder being relocated to other factories across Europe.
The firm's owners says the move will allow the company to "remain agile and competitive in an economic environment that continues to be challenging".
It comes barely a year after the firm cut 40 jobs at its South Lanarkshire plant to move production to Poland.
Eddie Duffy, Unite official said: "We believe it's corporate greed that is causing this.
"The plant would have held its own against other European plants but the company has starved it of investment.
"We have asked one of the owners from Holland to come over and speak to us so we can put our case directly to her.
"We are also pressing the Scottish Government to intervene."
Philips is entering a consultation period with staff, but it is thought that while it will seek to attract applications for voluntary redundancy, there will be compulsory redundancies. Last year's cuts saw all 40 posts shed via voluntary redundancy.
The factory, which opened in 1947, will continue to manufacture sodium street lamps.
Central Scotland Labour MSP Siobhan McMahon described the job cuts as a "devastating blow" for the local economy.