Katz was the Minister of Labor, Welfare and Social Services from 2015 to 2019, and served as a member of the Knesset for One Nation between 1999 and 2003, and for Likud between 2003 and 2023.

After finishing school and national service with the rank of master sergeant, he worked as an electronics technician.

In 1993 he became secretary of the National Workers Union of Israel Aircraft Industries, and was appointed chairman of the pension funds policy team of the Histadrut in 1996.

[citation needed] In the Likud primaries for the 2006 election, Katz gained thirteenth place on the party's list.

[8] On 26 September 2023, Katz became the first Israeli cabinet member to publicly visit Saudi Arabia to attend a UN World Tourism Organization (UNWTO) conference.

[11] In December 2021 Katz admitted and was charged with conflict of interest and conspiracy to achieve a lawful purpose by improper means.