Scottish Labour has written to Scottish and UK ministers demanding urgent action to protect more than 460 jobs at the McVitie's factory in Glasgow.
Monica Lennon, Labour's economy, jobs and fair work spokeswoman, has penned a letter to Fiona Hyslop and Kwasi Kwarteng asking for coordinated action after Pladis, the firm that owns McVitie's announced proposals to stop production at the Tollcross site.
The closure of the site would see the loss of 468 jobs.
Lennon wants the Scottish and UK governments to "immediately convene a joint task force with trade unions, local politicians and all appropriate agencies" to save the at risk jobs.
The Victoria Biscuit Works has been in operation for almost a century and is best known for producing products such as Digestives, Hobnobs and Rich Teas.
In the letter Lennon writes: "Now is the time for both the UK and Scottish Government to work together to protect these vital jobs at a historic Scottish brand.
"Both governments have spoken of the need to prioritise recovery from Covid-19; it is now time to put those promises into action.
"The announcement from McVitie’s comes after decades of underinvestment in the factory - the consequence of not having a coherent industrial strategy.
"Coming through the pandemic we urgently need an ambitious jobs plan that will support Scotland’s national recovery and build an economy that works for all."
Scottish Government Business Minister Jamie Hepburn said: “The consultation that Pladis proposes is a bitter blow for the McVitie’s workforce and the east end of Glasgow.
“I have spoken with the company, with trade unions and with the leader of Glasgow City Council Susan Aitken.
“Councillor Aitken and I immediately identified the need to bring all players together to have a coordinated response to try and persuade the company to remain at Tollcross and to support the workforce and the local area.
“The unions support this approach and I have asked the company to be involved in a group to respond to the challenges the closure throws up.
“We will pursue every opportunity to secure the future of the site, but it will require a willingness from Pladis to be engaged in that process.”
A UK government spokesperson said: "While this is a commercial decision for the company, we understand that this will be a concerning time for workers at the Tollcross factory, and we stand ready to support those impacted.
"The UK Government is committed to the post pandemic recovery in Glasgow and the rest of the UK through our Plan for Jobs, which is helping support businesses to recover with measures such as VAT cuts, business rates relief, and cash grants for affected sectors."
