Between 1999 and 2009, Berra worked in various pharmaceutical laboratories around Lyon, including Boehringer Ingelheim (1999-2001) and Bristol Myers Squibb (2001-2006),[4] where she conducted research on cervical cancer and Hepatitis B.

[5] She eventually decided against taking up her seat, instead joining the government of Prime Minister François Fillon.

[6] On June 23, 2009, Berra entered Fillon's government as Secretary of State for the Elderly,[7] under the leadership of successive ministers Xavier Darcos and Éric Woerth at the Ministry of Labour, Social Relations, Family and Solidarity.

On November 14, 2010, Berra was promoted to state secretary for health after a cabinet shift, this time under minister Xavier Bertrand.

[12] Ahead of the 2022 presidential elections, Berra publicly declared her support for incumbent Emmanuel Macron and criticized the Republicans’ candidate Valérie Pécresse.