About Science Based Management

Requisite Organization is the only systematically scientific approach to management. A unified whole system for effective managerial leadership that is integrated, flexible, fair and effectively productive.



ROII has research available for download free of charge.

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Welcome to the Requisite Organization International Institute

The Requisite Organization International Institute was established in 1999 to provide support and services to those engaged in the implementation and further development of the work on human organizational development begun by Elliott Jaques as Stratified Systems Theory over fifty years ago.

Today, the Institute supports implementations around the globe, helping companies achieve success never before possible. learn more >>

About Science Based Management


Requisite Organization is the term created by Elliott Jaques to refer to the only systematically scientific approach to the effective management of work systems, including structure, managerial leadership processes and human resources. The concepts and practices embedded in Requisite Organization are the result of the systematic application of numerous scientific discoveries about the nature of work and the nature of each individual’s capacity for work.

The Evolution of RO
See how RO has evolved from 1947 to today.


Elliott Jaques began the work behind Requisite Organization in 1932 after receiving his PhD from Harvard. In 1947, the foundation that would become RO was put into place.


Library of Work
Access books, research papers and more.


Download research papers, white papers and research studies by Elliott Jaques and the other contributors to the Requisite Organization International Institute.

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Cason Hall & Co. Store
Purchase the complete works of Elliott Jaques.


The many world renowned works of Dr. Elliott Jaques are made available in books and on audio from Cason Hall & Co. Publishers. Visit the store to purchase items by Dr. Jaques.

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