From 2000 to 2008 she worked as a
special needs teacher in
Wartau and
Schaan. From 2008 to 2010 she was a member of the board of directors and head of the special education school in Schaan. From 2000 to 2017 she was a manager at the Liechtenstein Old Age and Nursing Care, and also ran a nursing home in
Eschen until December 2016. As part of the coalition agreement established between the party and the
Progressive Citizens' Party following the
2017 Liechtenstein general election, she was appointed as a government councillor for the Interior, Education and Environment on 30 March 2017. As education minister, Hasler was faced with the challenge the
COVID-19 pandemic in Liechtenstein. Due to school closures as a result of the pandemic, she pioneered the transformation of Liechtenstein's education to a digital platform. in March 2024 Hasler was re-nominated a government candidate on 10 September 2020. Following the
2021 Liechtenstein general election, she was appointed as a government councillor for Foreign Affairs, Education and Sport under a new coalition agreement on 25 March 2021. She was the
President of the Committee of Ministers of the Council of Europe from 15 November 2023 to 17 May 2024. During this time, the Council of Europe passed the
Artificial Intelligence Act. Hasler, together with
Daniel Risch, started the government-funded
Book of Europe project in spring 2024, during Liechtenstein's presidency of the Council of Europe. In the book, the heads of government of the 46 members of the council were asked to write their thoughts and vision of Europe, which 33 did so. The book was published in February 2025. In February 2024, she announced that she was not seeking re-election in the
2025 Liechtenstein general election. She was succeeded on 10 April 2025. == Personal life ==