Union Approves Alaska Airlines Contract CheapOair Staff February 1, 2011 general Alaska Airlines have come to terms with its 2,600 employees, consisting of clerical, office and passenger workers on a new three-year contract. 90 percent of the International Association of Machinists and Aerospace Workers Union that voted approved the contract. Negotiations began in March, the two sides were able to reach a temporary agreement in December. Source: BizJournals