Stress is inevitable in any types of occupation and career. It is recognised as major managerial and economic issues which contribute to employee turnover and poor performance. There is a need to understand how to reduce the effects to employees. This study aims to determine the stress relationship between employees in commercial complex facilities management organisations. Data collection is through questionnaire surveys to employees and semi-structured interviews to selected facilities managers for commercial complexes in Klang Valley, Malaysia. 7he ßndings indicated existence of stress that affected the occupational and behavioural performances of employees. Keywords: Commercial complexes, Customers’ satisfaction, Human behaviour, Occupational stress eISSN 2514-7528 © 2017 The Author. Published for AMER ABRA by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.