A Muslim longtime receptionist at Cooper University Hospital alleges in a lawsuit she was disciplined for coming to work with henna ink markings on her hands, New Jersey Advance Media reports.

According to the report, the hospital prohibits visible tattoos or markings, despite the fact that henna ink is a common ceremonial practice for Muslims.

Althea Saunders says in her complaint she came to work three months ago with the non-permanent markings after participating in a religious custom, and explained it to coworkers when questioned, according to the report. She was told she could finish her shift only if she wore medical gloves for the rest of her workday, the report quotes the complaint saying.

After that meeting, Saunders reportedly says, she "began to receive negative performance evaluations from her supervisors, although in the past she had always received positive evaluations," and was threatened with disciplinary action that kept her from practicing henna art.