[1] Feger was appointed to serve in the Landtag of Liechtenstein by Johann II in 1902, a position he held until 1918.

[1] He visited South Tyrol in 1915 soon after Italy's entry into World War I where he gathered a report of the situation on the battlefield on behalf of the Liechtenstein government.

He served as Deputy Prime Minister of Liechtenstein from 2 March 1922 to 1 June 1922 under Prime Minister Josef Ospelt until he resigned in mid-1922 and was briefly appointed as acting Prime Minister of Liechtenstein from 4 May 1922 to 1 June 1922, but he shortly afterwards resigned this position for reportedly health reasons.

[1] After which, he again served as deputy prime minister under the government of Gustav Schädler.

[3] Schädler's government, including Feger was forced to resign in 1928 as a result of an embezzlement scandal involving the National Bank of Liechtenstein.