It looks like 2012 will be a busy year for negotiators. BNA’s Calendar of Negotiations tracks the major contract expirations that are coming up in the months ahead. The year-end version suggests that there are some interesting developments on the horizon.

The largest-scale negotiation—based on the number of workers covered under the current contract—will be between two actors’ unions and two advertising associations. March will see the expiration of a nationwide three-year pact between SAG/AFTRA and a joint bargaining committee representing the Association of National Advertisers and the American Association of Advertising Agencies. The negotiations will affect approximately 132,000 actors working in commercials, marketing campaigns, and new-media campaigns.

On a similarly sweeping scale, Kaiser Permanente’s  two-year contract with a coalition of more than 30 union locals, covering some 96,000 workers ranging from psychologists to grill cooks, is set to expire in September. But first, some Kaiser Foundation hospitals in southern California are negotiating the renewal oftheir own contract with 10,800 SEIU employees, which expires later this month.

Among manufacturers, the marquee event is between Boeing Co.and 21,000 aerospace engineers nationwide, whose four-year contract is up in October. Expectations of tense negotiations are understandable, since Boeing announced last week that it is closing its Wichita, Kansas, facility by the end of 2013. (The approximately 550 SPEEA members in Wichita are, however, covered under a separate agreement and are not affected by the nationwide negotiations.)

Other major expirations on the calendar for 2012 include:

February: Oil industry agreements (multi-employer) – Steelworkers, 30,000 workers

March: Meijer Great Lakes Limited Partners – UFCW, 27,000 workers

April: Building Contractors Association of New Jersey – Bricklayers/Carpenters/Laborers, 30,000 workers

May: Las Vegas casino hotels – UNITE HERE, 43,000 workers

June: Hotel Association of New York City – New York Hotel Trades Council, 24,000 workers

June: California Processors Inc. – Teamsters, 21,500 workers

August: U.S. Steel Corp. – Steelworkers, 15,000 workers

September: Federal Aviation Administration – Air Traffic Controllers, 15,800 workers

October: Qwest Communications – Communications Workers, 20,000 workers