Boeing says today it will not give technical workers a better deal after the 7,400-member group of employees rejected a new contract and authorised a strike.
The company revealed its position after meeting with a mediator and the technical workers' union - the Society of Professional Engineering Employees in Aerospace (SPEEA).
"We believe that it's time for all of us to come together as one team and focus on the challenges facing the company," Boeing says.
In a negotiations update to members, SPEEA says it continues to be "disappointed" with Boeing's offer, but noted that it is still an improvement over the company's initial offer.
In October, Boeing improved its offer on wage pools and medical plans, but held its ground on a plan to convert new hires from retirement pensions to a defined contribution scheme.
SPEEA will meet on Friday to plan the balloting process for the technical workers group.
The other work group represented by SPEEA, Boeing's engineers, approved a contract with the same terms earlier this month.