Allegiant Travel said on Thursday it has ratified a two-year extension of a contract agreement with Teamsters union representing some of its workers.

Allegiant Air carrier parent said the agreement provides for significant increases in compensation rates and extends the contract by two years till Oct. 31, 2028 for 683 workers.

The employee group includes line and heavy maintenance technicians as well as stores employees and some administrative maintenance staff, the company said.

In the past two years, unions across the aerospace, construction, airline and rail industries have put up fights for higher wages and more benefits in a tight labor market.

Earlier this week, Southwest Airlines reached a tentative labor agreement with the union that represents about 17,120 transport workers who handle ramp, operations, provisioning and cargo.

(Reporting by Sourasis Bose in Bengaluru; Editing by Shinjini Ganguli)