Home/American Shipper/Teamsters release details of tentative ABF contract American Shipper Teamsters release details of tentative ABF contract FreightWaves Staff · Tuesday, May 21, 2013 Facebook Twitter Pinterest LinkedInA 7 percent wage reduction, but no major cuts to health or pension benefits are amid the details of the tentative contract between the less-than-truckload carrier and its union drivers. A union vote on the proposal is set for June 3.