As social media become more pervasive and widespread in the workplace, there is an increasing need to study and understand the factors driving working professionals to use social media for work related purposes. Yet, knowledge about the factors influencing the use of social media technologies at work remains limited. Drawing from the uses and gratifications (U&G) theory, the objective of this study is to uncover the motivational factors driving the use of social media in the workplace. The U&G framework can help to understand the needs and wants of working professionals with regards to the use of social media for work related purposes. In addition, this study also investigates the influence of prior social media experience to complement the U&G theory. A survey was designed and administered to 157 working professionals. Results from the hierarchical regression analysis revealed that respondents with prior social media experiences were more likely to use social media at work. In addition, we also found that factors such as gratifications obtained from socializing and tasks accomplishment were also significant in influencing the use social media for work related purposes. Implications and directions for future work are discussed.