Before joining the firm in January of 1999, Mark practiced in the areas of employment law and constitutional and civil rights law. He represented plaintiffs and governmental entities, in both individual actions and class actions. Mark also practiced in the areas of wrongful death, personal injury, and general civil litigation, including nursing home negligence. He was a member of the Alabama ACLU's legal committee from 1991 through 1997.

Since joining the firm, Mark has handled nursing home negligence litigation, class action cases, mass torts product liability actions, complex business cases and environmental and toxic tort matters. Mark is counsel or co-counsel of record in over 40 reported decisions in the state and federal trial and appellate courts. These include Ex parte McCollough, 747 So.2d 887 (Ala. 1999), which significantly expanded the discovery available to plaintiffs in nursing home death and injury cases; and Alabama Catalog Sales v. Harris, 794 So.2d 312 (Ala. 2000), in which the Alabama Supreme Court held a payday loan contract to be void and unenforceable, and refused to compel arbitration. During his time with the firm, Mark has participated in three verdicts or settlements of eight figures or more.

Mark currently practices in the firm's Toxic Torts section. In 2003, he was involved in the largest toxic tort settlement in U.S. history. Estimated at $700 million, the settlement for PCB contamination in Anniston, Alabama involving Solutia, Monsanto, and Pharmacia doubled the previous mark of the case popularized by the film "Erin Brockovich." He is the author of: "Litigating the Nursing Home Case: Plaintiff's Perspective" (co-authored with R. Graham Esdale), "Nursing Home Litigation in the 90's: Not Just 'Old Folks in a Home," and "Litigating Toxic Torts" (co-authored by Rhon Jones).He also has given seminar presentations on plaintiff's perspective in civil rights and environmental toxic tort cases; and he has spoken on challenging binding arbitration at national seminars and a national meeting of state court appellate judges.

Mark and his wife, Debbie, are the proud parents of Stephanie, a graduate of Auburn University who is currently a landscape architect with a prominent firm in Orlando, Florida. Mark and his wife are members of Eastmont Baptist Church in Montgomery.