Boeing ( BA) said talks have broken off with its striking machinists union. "In light of the current business environment and global market challenges we face, we had hoped we could find a way to move forward. We worked very hard to find solutions, and we are extremely disappointed that the talks broke off," said the aerospace company in a statement late Monday. "We want to resolve this strike so employees can return to work, but we cannot sacrifice our ability to continuously improve productivity and our long-term competitiveness for an agreement." Boeing said no new talks are scheduled. About 27,000 employees in Washington, Oregon and Kansas have been on strike since Sept. 6, leading to a halt in the assembly of jets. The talks between Boeing and the union which resumed Sunday were the first since the strike began. Tom Wroblewski, president of Machinists District 751, blamed the breakdown of the talks on the issues of job security and outsourcing, the Associated Press reports. "The company is attempting to put the union in an unacceptable position to bargain away our members' jobs," Wroblewski said, adding one area of dispute was the job security of 2,000 union members who provide services ranging from material delivery to distribution of parts, AP reports. Wroblewski contends Boeing wants to outsource those jobs. Boeing spokesman Jim Proulx declined comment Monday on the union's specific allegations, according to the news agency.