The Local 1078 of the American Postal Workers Union is requesting a temporary restraining order to close down the Westgate Road postal service processing and distribution center.
The presence of anthrax was announced Thursday night after it was discovered on a shrink-wrapped pallet of stamps in a sample taken by the N.C. Department of Health and Human Services.
N.C. officials said the amount discovered is medically insignificant and that it is safe for the postal facility to remain open.
Raiko Hill, a postal clerk at the Westgate facility, said postal officials closed the Accountable Papers Section of the post office, which is where the anthrax was discovered. She added that decontamination began without shutting down the facility.
But Ajamu Dillahunt, president of Local 1078, said he thinks the anthrax discovery has been handled poorly. "We feel like they should shut the plant down and test other areas," he said.
But N.C. health officials said the presence of anthrax in the postal facility is medically insignificant and has been contained to the region where it was found.
Debbie Crane, spokeswoman for the Department of Health and Human Services, said the plant was not shut down because there is no medical concern.
She said the quantity of anthrax found was very small and was found in a locked vault, adding that people with access to that location would have shown symptoms by now.
But Dillahunt said the contaminated pallet had been moved through areas where more people could have been exposed.