The aim of this study is to investigate the antecedents and outcomes of volunteering by choosing mobile telecom sector of Pakistan as a case study. From the limitation of previous research in volunteering, we have chosen work decision autonomy & work method autonomy and personality traits (five-factor personality) as the antecedents and job performance as an outcomes of volunteering activities. Organizational support has been used as a moderating variable between antecedents and outcome of volunteering. Data is collected through a structured questionnaires from 340 employees of mobile telecom sector of Pakistan. Statistical analysis are done in SPSS. The finding of our study showed that there is positive and significant relationship between antecedents and outcome of individual’s volunteering at workplace. The study is unique in perspectives that it measured individual’s autonomy in working decisions and working methods as antecedents of individual volunteering. The findings of our study also showed that organizational supports has significant influence for initiating volunteering activities at workplace. Our findings has practical implications for initiating volunteering cause at workplace, and also to increase employees potential for developing social image of the organizations. Supervisor:- Dr. Hassan Rasool