Arkansas Best, Teamsters Extend Contract, Await Approval Of New Deal by Chris Bahn Posted 5/30/2013 01:41 pm Updated 2 years ago ABF Freight System Inc. and the Teamsters have extended their current labor contract through the end of June while waiting on union workers to approve a new deal between the two parties. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.