The union representing some 6,000 passenger service employees at

US Airways

(UAIRQ)

has paved the way for a strike should the airline get bankruptcy court approval to cancel its labor contracts.

The board of the Communications Workers of America, which represents the airline's reservation, gate and ticket staff, voted unanimously to authorize strike action. The approval comes after union members voted in favor of a strike earlier this month.

The union said it's in negotiations with airline management to try to reach a new labor agreement. US Airways, which is seeking to emerge from Chapter 11 bankruptcy protection, has asked a federal judge to cancel labor contracts with groups it has yet to get concessions from. The airline said it must get additional labor savings in order to become viable. The CWA calls US Airways' proposed wage and benefit concessions "devastating."

A CWA spokesman said the union could hold a strike if the bankruptcy judge throws out the contracts.

Another union, which represents the airline's flight attendants, is in the midst of voting on whether to stage strikes should the judge cancel the contracts.

US Airways shares are down 15 cents, or 12.1%, at $1.09.