After working as a political editor for the daily Journal de Genève, he spent a year at the Swiss Center for Advertising and Communication in Biel, completing a diploma in advertising and marketing.
For 13 years, as Head of Information at EconomieSuisse (the main Employers' Federation), Claude-Olivier was in charge of conceiving and leading over 70 campaigns for national votes that were essential for the Swiss economy.
Alongside this, he was also the secretary at the Free Enterprise Information Group, which links the directors of information of the European, Japanese and American Employers’ Federations. For ten years, he was also in charge of the communication of the liberal (conservative) party in Geneva, whose number of seats in Geneva's Parliament increased from 11 to 25 during this time.
In 1986, Claude-Olivier created the French Swiss subsidiary of Farner Consulting. In 1990, he founded Rochat & Partners, soon a leading agency, known for its skills and successes in financial PR, public affairs and crisis management. Sold in 2012, the agency became Voxia Communication.
Having joined Cabinet Privé de Conseil as a Senior Advisor at the beginning of 2016, Claude-Olivier is still accompanying a few long standing clients. With his great experience, he is also available for ad hoc crisis communication, as well as for the launch of innovative start-ups.
Described as « a man of influence more than a public person » by the Swiss financial daily Agefi, Claude-Olivier has been a member of the Conseil de direction of the Fédération des Entreprises Romandes for twelve years and is a former president of Geneva's Old Town Association, of the Geneva Lions Club and of the Friends of the Art & History Museum. Besides sailing, his main hobby is gardening. A dog lover, he also bred tortoises for many years.