From WebCPA.com:
An internal revenue agent has sued the  IRS for firing her after she insisted on wearing a ceremonial knife  on the job.
The agent, Kawaljeet Kaur Tagore, filed  suit against the IRS for discharging her in July 2006. She is a religious  Sikh who wears a knife known as a "kirpan." The blunt knife  is kept in a curved sheath at her side. Tagore initially began wearing  a 9-inch knife when she was formally initiated into the Sikh faith in  April 2005. The religion requires adherents to wear five sacred articles  of clothing.
After her supervisor objected, she switched  it for a 6-inch kirpan with a blunt 3-inch blade. According to her lawsuit,  the blade never set off the metal detectors in the Leland Building in  Houston, and was not able to inflict bodily harm. However, her supervisor  pointed out that federal law prohibits people from carrying blades longer  than 2.5 inches in government buildings.
"She was always able to go through  the metal detector, and it never beeped," said Harsimran Kaur,  legal director of the Sikh Coalition, which is helping represent Tagore.  "She would come and go several times a day, but after she told  her supervisor, he said we have a concern and we need you to not come  to work if you wear your kirpan."
Kaur noted that Tagore's office at the IRS contained sharper objects, including scissors, letter openers, box cutters and kitchen knives. The IRS, she claimed, even required Tagore to bring her own scissors and letter opener to the offices of people she was auditing along with a kit of other office supplies, including a fax machine.