Workers' Credit Union, Lancaster, Mass., has promoted Lynn M. Buteau to assistant vice president and Lancaster branch manager. Service Credit Union, Portsmouth, N.H., has promoted Kimberly Barrett to member service representative level II and Jenny White to contact center representative level III. Wemelco Credit Union, Springfield, Mass., has named Wendy J. Tariff CEO. BayLands Federal Credit Union, West Point, Va., has appointed Mary Gene Simmons to vice president-finance and chief financial officer; Marvin H. Tiller to vice president-lending and special projects; and Linda G. Walton to vice president-human resources. Sharon Credit Union, Sharon, Mass., recently elected Andrew McCormack to its board of directors at its annual meeting.