The president of the flight attendants’ union at American Airlines, who helped mobilize worker support for the merger with US Airways, says she will resign her job in December.

Laura Glading told leaders of the Association of Professional Flight Attendants about her decision over the weekend. Her term was scheduled to end in less than six months, and she had already indicated that she would not seek re-election.

In her resignation letter, which she posted on Facebook, Glading cited a potential recall election and appealed for unity within the union. Some flight attendants were unhappy with Glading over the union’s agreement to a contract that did not include profit-sharing.

Glading has been president of the American Airlines flight attendants’ union since 2008. After the airline filed for bankruptcy protection and then merged with US Airways in 2013, the group became the bargaining agent for all 25,000 cabin crew members at both airlines.

Glading said the union-backed merger saved the jobs of 5,000 flight attendants and led to pay raises of 13 percent to 16 percent.

Photo Credit: Dozens of flight attendants, pilots and airline union members rallied in front of the Capitol Wednesday, September 18, 2013. Olivier Douliery / Abaca Press/MCT