This paper responds to the corporate social responsibility (CSR) literature’s calls for further research at the micro level by studying the effects of attitudes, norms and subjective knowledge on employees’ energy saving behaviors at the workplace. An initial theoretical model which identifies cognitive (workplace norms and subjective energy saving knowledge at the workplace), attitudinal (general environmentally friendly attitudes and specific energy saving attitudes), and behavioral (energy saving behaviors at home) variables that affect energy saving behaviors of employees at the workplace is advanced and tested. Managerial implications and future research directions for effective social marketing interventions that motivate energy saving behaviors at the workplace are discussed.