More than 16 staff at Briar Chemicals in Sweet Briar Road are locked in an ongoing dispute with their bosses over wages.
The employees want to receive an eight percent pay increase over the next two years.
But the chemical firm, which employs around 260 people, refused the raise and instead offered a dental plan.
This made workers feel that they were not being taken seriously, a spokeswoman for GMB union said.
The firm employs around 260 people (Image:........© Eastern Daily Press