Based on the essence of the Ability, Motivation, Opportunity (AMO) theory, the purpose of this study is to investigate how sustainable human resource management (SHRM) impacts organizational citizenship behaviour towards sustainability (OCBS) and in turn its influence on the sustainability performance of the companies. Using a quantitative research design, a structured questionnaire was used to collect the data from the managers and executives from the manufacturing organizations both multinational and local, situated in Delhi, National Capital Region (NCR), India. Data were analyzed using smart partial least square-structural equation modelling (SmartPLS-SEM). The results indicate that based on the AMO theory, three dimensions of SHRM significantly impact OCBS. It was also found that organizational citizenship behaviour towards sustainability significantly impacts the sustainability performance of the organization. Further, the results of mediation analysis also suggest that through OCBS, sustainable human resource practices can influence the sustainability performance of the organization. This study offers significant insights into the implementation of SHRM to improve the sustainability performance of the corporation, which is a need of the hour. Further, this study significantly contributes to the extant literature on SHRM by providing additional empirical evidence from a major developing country like India.