International Journal of Economics, Commerce and Management United Kingdom Vol. III, Issue 4, April 2015 Licensed under Creative Common Page 1 http://ijecm.co.uk/ ISSN 2348 0386 MEASURING EFFECTS OF MODERATOR’S FACTORS OF RELATIONSHIP BETWEEN STRATEGIC MANAGEMENT AND GLOBAL PERFORMANCE: CASE OF TUNISIAN SME'S INVOLVED IN THE UPGRADING PROGRAM Fakher Jaoua College of Economics and Administrative Sciences, Department of Business Administration, Imam Muhammad ibn Saud Islamic University in Riyadh, Saudi Arabia fakher_jaoua@yahoo.fr Abstract Previous studies suggest that strategic management is beneficial to global performance. This research examines the contribution of strategic management to global performance in a sample of 276 Tunisian SME's involved in the upgrading program. It seeks to measure the moderating effect of moderator's factors (organizational structure, environment and leader skills) on the relationship between strategic management and global performance. The results support no moderating effect of organizational structure and leader skills on the contribution of strategic management and global performance. The effect of strategic management on global performance is moderated only by environment. The more the environment is complex, uncertain, dynamic, or turbulent, the more strategic management improves global performance. These results are not surprising since they all confirm advanced results in the literature that consider any strategic process must be determined by its external context. Specifically they consider that facing the turbulence of the environment, the company has more interest in adopting strategic management if it was in a stable environment. Keywords: strategic management, global performance, organizational structure, environment, leader skills