New York (CNN Business) More than 500 Delta Air Lines employees are suing Lands' End, alleging that the uniforms it provided to the airline are causing some workers to have health issues.

The suit claims that the uniforms worn by flight attendants and some ground workers "pose an ongoing, unreasonable risks of physical harm... including threatening the [employees] with future serious health problems because of an allergic and/or sensitization response."

The health effects employees wearing the uniforms allege they suffered from include vocal cord dysfunction, breathing difficulties, skin blisters and rashes, blurred vision, nosebleeds, ringing ears, migraine headaches and fatigue.

The uniforms debuted in 2016. The suit says the employees have been required to wear them since May of 2018.

The suit names more than 500 plaintiffs who are employees of the airline. Most of them are flight attendants said Bruce Maxwell, one of the attorneys bringing the case. His office also has the name of more than 500 additional Delta employees complaining about the uniforms, and that a Facebook group created to address employee concerns has more than 6,000 members.

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