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Holobek served on the board of the American Heart Association, was the president of the Louisiana Heart Society and president of the National Federation of Catholic Physicians Guilds. He was associate editor of the ''Linacre Quarterly,'' the official publication of the Catholic Medical Association. In his later years, he was a delegate to the Task Force on Aging of the Catholic Diocese of Shreveport and a delegate to the Committee on Aging of the Louisiana Interfaith Conference. He received distinguished service awards from the Shreveport Medical Society, the National Federation of Catholic Physicians Guilds, the American Heart Association, and the American College of Cardiology. He also worked to obtain staffing privileges at Shreveport-area hosdpitals for [[African-American]] physicians.<ref name=obit/>

Holobek served on the board of the American Heart Association, was the president of the Louisiana Heart Society and president of the National Federation of Catholic Physicians Guilds. He was associate editor of the ''Linacre Quarterly,'' the official publication of the Catholic Medical Association. In his later years, he was a delegate to the Task Force on Aging of the Catholic Diocese of Shreveport and a delegate to the Committee on Aging of the Louisiana Interfaith Conference. He received distinguished service awards from the Shreveport Medical Society, the National Federation of Catholic Physicians Guilds, the American Heart Association, and the American College of Cardiology. He also worked to obtain staffing privileges at Shreveport-area hosdpitals for [[African-American]] physicians.<ref name=obit/>

Two years after the passing of his wife, Joe Holoubek died in a Shreveport hospital at the age of ninety-one. The couple is interred at  

Two years after the passing of his wife, Joe Holoubek died in a Shreveport hospital at the age of ninety-one. The couple is interred at  

Forest Park East Cemetery in Shreveport.<ref name=obit/> The Holoubeks had two sons, Brian Baker Holoubek, Sr.  (1945-2017), a farmer in Kingston in DeSoto Parish<ref>{{cite web|url=https://www.findagrave.com/memorial/175117690/brian-baker-holoubek|title=Brian Baker Holoubek, Sr. obituary|publisher=Findagrave.com|accessdate=April 14, 2019}}</ref>, and Robert Joseph "Bob" Holoubek (born June 18, 1948), a staff pharmacist at the Overton Brooks Veterans Medical Center in Shrevepo rt, and two daughters, Mary Jo O'Rear (born 1943) of [[Corpus Christi]], [[Texas]], who was employed by South Texas Community College,<ref>{{cite web|url=https://www.intelius.com/people-search/Mary-H-O'rear/Corpus%20Christi-TX|title=Mary Jo O'Rear|publisher=Intelius.com|accessdate=April 14, 2019}}</ref> and Martha H. Fitzgerald (born August 22, 1951), the wife of Thomas Patrick Fitzgerald, III, of Shreveport.<ref name=obit/>  

Forest Park East Cemetery in Shreveport.<ref name=obit/> The Holoubeks had two sons, Brian Baker Holoubek, Sr.  (1945-2017), a farmer in Kingston in DeSoto Parish<ref>{{cite web|url=https://www.findagrave.com/memorial/175117690/brian-baker-holoubek|title=Brian Baker Holoubek, Sr. obituary|publisher=Findagrave.com|accessdate=April 14, 2019}}</ref>, and Robert Joseph "Bob" Holoubek (born June 18, 1948), a staff pharmacist at the Overton Brooks Veterans Medical Center in Shrevepo rt, and two daughters, Mary Jo O'Rear (born 1943) of [[Corpus Christi]], [[Texas]], who was employed by South Texas Community College,<ref>{{cite web|url=https://www.intelius.com/people-search/Mary-H-O'rear/Corpus%20Christi-TX|title=Mary Jo O'Rear|publisher=Intelius.com|accessdate=April 14, 2019}}</ref> and Martha H. Fitzgerald (born August 22, 1951), the wife of Thomas Patrick Fitzgerald, III, of Shreveport.<ref name=obit/>