Marxer entered politics as a member of the Progressive Citizens' Party and remained so from 1928 to 1945. He had a friendship with Josef Hoop[1] and was appointed to serve Deputy Prime Minister of Liechtenstein on 4 August 1928, the same day Hoop himself became Prime Minister of Liechtenstein.[5] He resigned this position in 1933 due to his desire to focus on his law practice and was succeeded by Anton Frommelt.[1][5] He remained a government advisor to Hoop for the rest of his premiership and officially resigned all government positions upon Hoop's resignation in 1945.[1][6] A number of his clients and business partners were Jewish, which made him a target of attacks by the German National Movement in Liechtenstein (VBDL).[1] On 16 June 1940 his house was the subject of a bombing attack.[7]
From 1937 he served in the Princely judicial council then in the Staatsgerichtshof from 1960.[8]
Personal life
Marxer married Maria Öhri (29 May 1907 – 17 March 1962), the daughter of Josef Peer, on 27 July 1932 and they had three children, including Peter Marxer who took over his law firm and was also a politician in the Progressive Citizens' Party.[1][9] Marxer died of a stroke on 20 February 1962 at the age of 64 years old.[1]
He found his final resting place at the Vaduz cemetery next to his parents and his older sister Isabella (1887-1935). His wife, his son Peter and Peter's son Ludwig (1962-2006), who also became a lawyer and crime writer, were later buried in the family grave as well.