The main objective of the report is to review the international, quantitative literature on the effects of individual, task, social, group, leader and organizational factors on both employee well-being and performance at work. We also report the results of national workshops in Nordic countries, which provide practitioners ideas on workplace initiatives to improve employee well-being and performance. From our literature review, we conclude that individual and organizational factors are more often related to both employee outcomes than group or leadership factors. Employee performance was found to be a stronger outcome than employee well-being for all workplace factors. National workshops indicate that initiatives can develop factors to improve well-being and performance. We conclude with a model that identifies the different factors that promote employee well-being and performance.