CHICAGO (Reuters) – Pilots at Delta Air Lines have ratified a new contract that includes over $7 billion in cumulative increases in pay and benefits over four years, their union said on Wednesday.

The Air Line Pilots Association (ALPA) said that 78% of Delta pilots voted in favor of the contract.

The new contract provides a 34% cumulative pay increase as well as improvements to the quality of life, vacations and benefits for the Atlanta-based carrier’s 15,000 pilots, ALPA said.

It will come into effect on March 2.

(Reporting by Rajesh Kumar Singh; Editing by Chizu Nomiyama)