The matter is over terms and conditions.
An Offaly biotech company is refusing to engage with its SIPTU members over terms and conditions.
The union says there are a large number of SIPTU workers at the STERIS site in Tullamore, and the issue has been on-going for six years.
A Labour Court Hearing had been scheduled in the past, but STERIS reps didn't attend the proceedings.
Divsional Organiser with SIPTU, Robbie Purfield, says the company isn't engaging with the union: