Senator Cash was elected to the Senate as a Liberal Senator for Western Australia in 2007. She commenced her term on 1 July 2008. She was re-elected as a Senator for Western Australia in 2013 and 2016.
On 28 August 2018, Senator Cash was appointed the Minister for Small and Family Business; Skills & Vocational education in the Morrison Cabinet.
Since entering public life Michaelia has held a number of Ministerial appointments. Michaelia was appointed to the Cabinet as the Minister for Employment; the Minister for Women and the Minister Assisting the Prime Minster for the Public Service on 21 September 2015. On 20 December 2017, Senator Cash was appointed the Minister for Jobs and Innovation.
From 18 September 2013 to 21 September 2015 she was the Assistant Minister for Immigration and Border Protection and the Minister Assisting the Prime Minister for the Status of Women.
In September 2012, she was appointed Deputy Manager of Opposition Business in the Senate.
In September 2010, she was appointed to the dual roles of the Shadow Parliamentary Secretary for Immigration and Shadow Parliamentary Secretary for the Status of Women.
Prior to entering Parliament, Senator Cash was a senior lawyer at law firm Freehills (now Herbert Smith Freehills) practicing employment and industrial law.
Senator Cash holds an Honours Degree in Law from the University of London and a Bachelor of Arts (Social Science) from Curtin University in Perth, graduating with a triple major in public relations, politics and journalism. In addition, she holds a Graduate Diploma in Legal Practice from the University of Western Australia.