1948: St. Thomas More, Ripley, NY; (In charge, Buffalo Missionary Apostolate, Missionary)
1949-1953: Ascension, North Tonawanda, NY
1954: Absent on sick leave; St. Francis Hospital, Miami Beach, FL
1955: Absent on sick leave; Kenmore Mercy Hospital, Kenmore, NY
1956-1966: Ascension, North Tonawanda, NY
1967-1970: Our Lady of Victory, Frewsburg, NY
1971-1988 All Saints, Buffalo, NY
Notes: On March 20, 2018, the Diocese of Buffalo included Fr. James F. Hayes on its list of priests who have been accused of child sexual abuse. The diocese did not disclose any information regarding the allegations or Fr. Hayes’ prior assignments. According to the diocese, Fr. Hayes died in 1988.