David Parker has been named senior vice president for growth operations at Colonial Life and Accident Insurance Co. Parker previously served as a senior vice president in the finance department and as chief financial officer. Tim Arnold has taken the reins as chief executive officer. Entering vice president roles are Richard Shaffer and Kyle Addy. Ronda Tranter and Melissa Constante have been promoted to assistant vice president roles. Heather Lozynski and John Livengood have been named directors, and Todd Mason has been named a territory sales manager.