Kaiser was born on 29 June 1958 in
Eschen as the son of teacher Paul Kaiser and Brigitte (
née Biedermann) as one of five children. He attended a teachers' training college in
Rickenbach, Schwyz, and later trained in communication and management in
St. Gallen. He worked as a primary school teacher in
Ruggell, and then as a secondary school teacher in Eschen until 1991. From 1987 to 1991 Kaiser was the vice president of the Progressive Citizens' Party (FBP). He served this position until February 2003. His time as mayor included several public works in the municipality, such as the primary school being expanded, a leisure facility being established, and the church in
Schaanwald being renovated. He declined to seek re-election as mayor in 2003 and was succeeded by
Freddy Kaiser in February. He has been a member of the
Landtag of Liechtenstein since
2001. During this time, he has been the FBP's spokesman in the Landtag from 2009 to 2013 and the chairman of the finance committee from 2003 to 2009 and again from 2013 to 2017. From 2009 to 2013, 2017 to 2018, and again from 2021 to 2025 he was a member of the Liechtenstein judge selection committee. In 2008 Kaiser, alongside Herbert Oehri, founded the publisher
Zeit-Verlag Anstalt in Eschen and he has remained a board member since. He is also an editor for the publisher's newspaper
Lie:zeit. In the previous months, Kaiser and
prime minister Adrian Hasler had been publicly attacking each other, and in an interview with
Radio Liechtenstein in January 2018, FBP president
Thomas Banzer stated that expelling Kaiser from the party was "an option that's on the table.". Kaiser also resigned from the judge selection committee in June of the same year. He served as an
independent member of the Landtag until 27 November 2019 where, upon his own request, he was readmitted into the party. He apologised for his actions and referred to them as a "mistake", and the issue was concluded by him shaking hands with Hasler. He was subsequently re-elected to the Landtag as a member of the party in
2021 and re-joined the judge selection committee the same year. == Political positions ==