NDA's are sometimes used as a Union busting tactic. They try to restrict the union from keeping its members informed. The company tries to structure the NDA such that the union can't say anything or they're in violation of the NDA. Whenever the union finally releases any information to the pilots, the Company cries foul and then sues or threatens to sue the Union, further distracting everyone from the pathetic progress being made in actual negotiations. When the union is threatened by the company, they further restrict communications which adds to the rank and file frustration.

My take on the subject is I wouldn't sign an NDA because I don't need any secret or proprietary information from the company. I'm negotiating Pilot pay, not applying for a consulting position with the company. Pilots (especially at Frontier) are just a commodity. We're really no different than the fuel supplier or the Diet Coke supplier. Our cost to the company doesn't depend on the company's business plan or secret business decisions. It's based on the market for pilots.