Permission from the local authority was granted in August 2020 but was then appealed.
An Bord Plenála is being urged to provide a definite timeline on when it will make a decision on Banagher Chilling Limited.
Plans for a new Chinese-funded meat factory in west Offaly got the green light from the local authority in August 2020, but that decision has since been appealed.
Independent Laois-Offaly TD Carol Nolan says she's received confirmation that the inspector's report into the appeal will be completed in the next two weeks.
However, she says it's unacceptable the process has been allowed to drag on for almost two years, with two deadlines missed already: