Since December 2021, she is the founding president of the Pierre and Catherine Lalumière Foundation, hosted by the Fondation de France.

[6] Catherine Lalumière entered the national political scene following the election of François Mitterrand as President of the Republic in May 1981.

She was appointed Secretary of State for Public Service and Administrative Reform to Prime Minister Pierre Mauroy's first government in May 1981.

[7] After being elected as a deputy for the first time in Gironde in June 1981, she was appointed Minister of Consumer Affairs in Pierre Mauroy's second government.

In the following month, she received the Secretary-General of the Communist Party of the Soviet Union, Mikhail Gorbachev, who presented his vision of a united Europe within the "Common European Home."

In December 2021, she established the Pierre et Catherine Lalumière Foundation, hosted by the Fondation de France.