Theresa Regina Haslag, 82, of Jefferson City, passed away Sunday, February 21, 2016 at SSM Health St. Mary's Hospital. She was born March 27, 1933 in Loose Creek, Missouri, the daughter of the late Gustave and Mary Mertens Kremer. She was united in marriage on August 27, 1955, in Loose Creek, Missouri, to Hugo Henry Haslag who preceded her in death on October 19, 1998. Theresa worked over forty years for the State of Missouri Employment Security as a Claims Supervisor. She was a member of St. Peter Catholic Church and was very involved in the daily activities of the church. Survivors include one son, David (LeAnn) Haslag, Jefferson City; two granddaughters, Alexis Haslag and Molly Haslag, both of Jefferson City; one brother, Sylvester (Evelyn) Kremer, Loose Creek; three sisters and brother-in-law, Agnes Muenks, Jefferson City; Pauline (Hubert) Bescheinen, Loose Creek; Margaret Kremer, Jefferson City; one sister-in-law, Mary Esther Kremer, Loose Creek; and two brothers-in-law, Alvin Toebben, St. Martins; Mitch Massman, Wardsville; and numerous nieces and nephews. She was preceded in death by her brother, Aloysius Kremer; three sisters and brother-in-law, Clara and Al Backes, Generose Toebben and Betty Massman; and one brother-in-law, Ed Muenks. Visitation will be 4-6:30 p.m. Wednesday, February 24, 2016, at Dulle-Trimble Funeral Home with a prayer service at 3:30 p.m. Mass of Christian Burial will be 10 a.m. Thursday, February 25, 2016, at St. Peter Catholic Church with the Rev. Gregory C. Meystrik officiating. Burial will be in Resurrection Cemetery. Memorials are suggested to St. Peter Catholic Church, 216 Broadway St. Jefferson City; MO 65101. Those wishing to email tributes or condolences to the family may do so at the www.dulletrimble.com website.