According to Unite the union, more than 100 affiliated employees at the facility will begin strike action on 28 September, followed by smaller, specific groups through to 5.59am on 15 October.
Successive days of action by distillation and process controllers, distillery and machine operators, technicians, quality control analysts, process chemists and engineers will take place each day throughout the three-week period.
The industrial action is linked to the global drinks giant’s plans to cut hundreds of jobs across its Scottish operations as part of wider restructuring proposals.
Cameronbridge is Europe’s largest grain distillery, employing around 200 people, with more than 70 roles currently under review.
Over the last financial year, the Guinness and Smirnoff owner cut close to 2,000 roles as chief executive Dave Lewis continued to implement a wide-ranging cost-cutting plan.
Unite believes Diageo has failed to properly consult on the job cuts at Cameronbridge and that the company has provided no explanation and minimal detail on the proposed redundancies.
The union has also raised concerns over worker safety and wellbeing, claiming roles are being cut without a corresponding reduction in production at the distillery.
Unite general secretary Sharon Graham said: “Unite has repeatedly warned Diageo that there is no justification for slashing hundreds of jobs across its operations when it is raking in hundreds of millions of profit.
“We are backing our members at Cameronbridge all the way in their fight for jobs, pay and conditions.”
Diageo has around 3,000 employees based at distilleries and bottling plants across Scotland.
In its latest registered accounts, Diageo Scotland recorded after-tax profit of £595 million in 2025 and £736 million in 2024.
Opened in 1824, the Cameronbridge facility produces a number of whiskies within Diageo’s portfolio, including Haig Club, Cameron Brig, Johnnie Walker, J&B, Bell’s, Vat 69, White Horse and Black & White.
It also manufactures some of Diageo’s best-known gins and white spirits, including Gordon’s, Tanqueray, Smirnoff, Pimm’s and Archers.
Unite deputy Scottish secretary Dougie Maguire added: “It really is last orders for Diageo. It has a final opportunity to step back from its callous cuts at Cameronbridge.
“If it fails to halt these self-destructive proposals, then strikes will bring production to a standstill.
“Industrial action will disrupt the supply of many people’s favourite drinks but the blame for this will lie squarely with Diageo’s management.”
