UPDATE 1-Alcoa Agrees New Pact with Union Workers

June 25 (Reuters) -- U.S. aluminium giant Alcoa Inc (AA.N: Quote) said it ratified a new four-year contract with the United Steelworkers union covering 5,400 employees at ten of its locations in the United States.

The company, one of the world's largest aluminum producers, said on its website there would be no wage increases in 2010 and 2011 but all job classes will see their wages go up by 2.5 percent each in 2012 and 2013.

Also, the company's healthcare program will see increased employee contributions, with price tags increasing every year.

The union contract covers all Alcoa workers in the U.S. under an umbrella deal.