The number of staff threatened with compulsory redundancy is already at a low level as volunteers have been found and some staff affected by the changes have been redeployed to other jobs.
STV has insisted that the launch of the new radio station and changes to news are entirely separate developments.
The changes to news follow falls in advertising revenue and declining viewing figures. The company argues the changes will ensure the service is sustainable for years to come.
Although the 18:00 news programme gets good ratings – and is often the most-watched programme of the day on any channel in Scotland – little advertising is shown around it, so the high audience is of little direct commercial benefit to the company.
The union fears the driving force for the cuts is STV’s current financial challenges. Its share price has fallen badly since a profits warning in the summer and the company is only worth around £50m on the stock market.
The plan for the new radio station was announced months before the profits warning and the news cuts.
STV said its investment in radio “will drive profitable revenue for the company, helping to support our multi-million pound news operation which is not financially sustainable in its current form and for which we receive no public funding”.
A spokesperson added: “Our request to Ofcom for changes to the news commitments in our licences, which they propose to accept, ensures the delivery of newsgathering and coverage right across Scotland on a sustainable basis for the company, and sees the expansion of our digital news service in response to changing news consumption.
“As a result of our cost savings plan, 28 roles are impacted across our newsrooms, the majority of which have been achieved through voluntary redundancy or redeployment.”
STV is the only part of the Channel 3 network which is not run by ITV plc. Viewers in southern Scotland, who receive ITV1 and the local news programme Lookaround, are not affected by the plan.
The last time NUJ members at STV went on strike was in the spring of 2024.
This blacked-out news programmes but programmes taken from the ITV network and adverts were broadcast normally.