Trepanier MacGillis Battina shareholder V. John Ella will speak at the Annual Conference of the national Association for Addiction Professionals (NAADAC) on October 9, 2016. The title of his presentation is “The Law of Drug Testing in the Workplace: The Minnesota Model.” He will be discussing Minnesota’s drug and alcohol testing in the workplace act from the perspective of addiction professionals. Trepanier MacGillis Battina has significant experience in drug testing law.