The pandemic forced many workers in Canada to work remotely. Today, many continue to work remotely, at least in part. This new "hybrid" organisational mode offers employees greater flexibility. What are the advantages and limitations of hybrid working? How can the benefits of hybrid work be optimised while taking into account the basic needs of people at work? A CIRANO team is conducting an innovative longitudinal study that provides evidence to assist employers in their work organization decisions. In this short text, the authors present the highlights of the first phase of the project based on data collected from over 10,000 employees in Quebec.