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In 1979, Hayes portrayed a Sheriff Pinter in James Arness's ABC series ''How the West Was Won.'' Otherwise, most of his work in the 1970s was on drama series, including Raymond Bur'd ''Ironside'' on NBC and ''The Mod Squad'' on ABC. He also appeared in three CBS series, Jack Lord's original version of ''Hawaii Five-O'' (as Roy in the Season 3 episode "The Ransom" and as Laughlin in the Season 5 episode "The Odd-Lot Caper"), William Conrad's ''Cannon'' (as Harry Gibbons in the episode "Press Pass to the Slammer"), and Buddy Ebsen's ''Barnaby Jones'' (as Sheriff Oscar Hamlin in "Target for a Wedding"). His last recurring work was as Hank Johnson in 1980–1981 in six episodes of CBS's [[prime time]] soap opera ''Dallas.'' Thereafter, in 1983, he appeared as Tim Coulton in "Children of Jamestown" of NBC's ''The A-Team'' starring George Peppard.<ref name=imdb/>​

In 1979, Hayes portrayed a Sheriff Pinter in James Arness's ABC series ''How the West Was Won.'' Otherwise, most of his work in the 1970s was on drama series, including Raymond Bur'd ''Ironside'' on NBC and ''The Mod Squad'' on ABC. He also appeared in three CBS series, Jack Lord's original version of ''Hawaii Five-O'' (as Roy in the Season 3 episode "The Ransom" and as Laughlin in the Season 5 episode "The Odd-Lot Caper"), William Conrad's ''Cannon'' (as Harry Gibbons in the episode "Press Pass to the Slammer"), and Buddy Ebsen's ''Barnaby Jones'' (as Sheriff Oscar Hamlin in "Target for a Wedding"). His last recurring work was as Hank Johnson in 1980–1981 in six episodes of CBS's [[prime time]] soap opera ''Dallas.'' Thereafter, in 1983, he appeared as Tim Coulton in "Children of Jamestown" of NBC's ''The A-Team'' starring George Peppard.<ref name=imdb/>​

===Accidnetal death===​

===Accidental death===

Hayes died at the age of seventy-five from complications of an acute subdural hematoma which resulted from a fall near his residence in Malibu, California. He was survived by his three children and five grandchildren.<ref name=obit/>His son Peter Gynt Hayes (1955-2015, was an [[educator]] and outdoorsman like his father. In 1988, he sustained a fall that crushed both heel bones but recovered. He spent his last years in [[Utah]] and taught for twenty-eight years.<ref name=pgh>{{cite web|url=https://www.legacy.com/obituaries/deseretnews/obituary.aspx?pid=175863971|title=Peter Hayes obituary|publisher=''Salt Lake City Deseret News''|date=September 20, 2015|accessdate=June 28, 2020}}</ref>

Hayes died at the age of seventy-five from complications of an acute subdural hematoma which resulted from a fall near his residence in Malibu, California. He was survived by his three children and five grandchildren.<ref name=obit/>His son, Peter Gynt Hayes (1955-2015), was an [[educator]] and outdoorsman like his father. In 1988, he sustained a fall that crushed both heel bones but recovered. He spent his last years in [[Utah]] and taught for twenty-eight years.<ref name=pgh>{{cite web|url=https://www.legacy.com/obituaries/deseretnews/obituary.aspx?pid=175863971|title=Peter Hayes obituary|publisher=''Salt Lake City Deseret News''|date=September 20, 2015|accessdate=June 28, 2020}}</ref>

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==Filmography==​

==Filmography==​

|1960|| ''Who Was That Lady?'' || F.B.I. Man || Uncredited​

|1960|| ''Who Was That Lady?'' || F.B.I. Man || Uncredited​

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|1966|| ''Around the World Under the Sea'' || Brinkman ||​

|1966|| ''Around the World Under the Sea''   || Brinkman ||​

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|1978|| ''Zero to Sixty'' || Officer Ron ||​

|1978|| ''Zero to Sixty'' || Officer Ron ||​