It's the second case to be confirmed at a plant in the county.
A case of Covid-19 has been confirmed at a meat plant in Tipperary.
ABP Foods in Cahir says the case was confirmed on Friday, and all close contacts of the worker are self isolating and will undergo testing.
It's the second time a case has been confirmed at a plant in the county, after an outbreak at a mushroom farm in Golden last week.
Independent TD Mattie McGrath says the latest outbreak is a worry.
''It is a concern, Cahir is not that far from Golden in South Tipperary and I do appreciate the HSE are dealing with the mushroom plant and have done pretty swiftly'', he said.
''And I hope this one was detected fairly early on people are isolating so hopefully it can be contained at these two locations''.
