1971

Release of the first survey on accounting information costs and deadlines. Creation of the "top businesses club"; Jacques Chaban-Delmas presides over its first congress.

1972

Sligos is created through the merger of Cegos Informatique and Sliga, a subsidiary of Crédit Lyonnais.

1974

Specific divisions are set up for secretarial training and organisation (IFOS) headed by Louise Hétier, and corporate psychology (IPPSO) headed by Dominique Chalvin.

1975

The journal Hommes et Techniques is absorbed by the French Management Review. Octave Gélinier participates in drawing up the Sudreau report commissioned by French President Valéry Giscard d'Estaing. The report urges corporate reform – the necessity to rethink hierarchical relationships and task organisation following the social upheaval of 1968.

1976

Pierre Leboulleux takes control of Cegos, shifting the focus back to its two main businesses: consultancy and training.

1981

Cegos consultants and executives travel to Japan to learn about Japanese quality control methods. Two years later, they go to Silicon Valley in California to study companies like Apple, IBM, and Xerox.

1983

Pierre Leboulleux creates the first logo, giving Cegos a unified image. Cegos launches its DCO, a contract-based approach to achieving objectives; it is, in fact, a three-way contract between the company, the participant and Cegos. On-the-spot evaluation questionnaires become standard practice for open courses. Hommes et Techniques publications sold to Editions d'Organisation.

1984

Cegos turns its attention to continued professional training, drawing up an assessment of the system and exploring avenues to pursue. This leads to a report co-signed by Cegos and Yves Cannac on the issue of skills and continuous professional training at the heart of a company's strategies (La bataille de la compétence. L'éducation professionnelle permanente au cœur des stratégies de l'entreprise), then a highly successful and ground-breaking discussion forum and, finally, a book.

1985

 Yves Cannac succeeds Octave Gélinier as President of Cegos association and is co-CEO of the group with Pierre Leboulleux.