This study empirically analyses the relationship between the dimensions of assertiveness behavior with organizational Climate among workers in a multinational company in Malaysia. Hence, this study was conducted to determine the potential effects of assertiveness behavior on organizational Climate. A total of 57 respondents were chosen to participate in this study based on the quantitative approach. Two methods were used as part of the measurements, including The Rathus Assertiveness Schedule, which measures the assertiveness dimensions mentioned in this study. The questionnaire will then be used to measure the organizational Climate. Interestingly, the organizational climate level shared different results. Keywords: Assertiveness, Organizational Climate, Multinational Company eISSN: 2398-4287 © 2023. The Authors. Published for AMER ABRA cE-Bs 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 the responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians), and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v8i23.4473