Career
Born in Mount Perry, Queensland, he received a primary education before becoming a bushworker. He was active in the trade union movement, notably the Sugar Workers Union, and was an organiser with the Australian Workers" Union, of which he eventually became Queensland secretary. In 1928, he was elected to the Australian House of Representatives as the Labor member for Herbert, defeating the sitting Nationalist Lewis Nott.
He held the seat until 1946, when he retired from politics to become director of Commonwealth Oil Refineries.
Martens died in 1949.