Nowadays, the emerging RFID technology has generated a dilemma in a lot of sectors and fields. Especially companies seem to be among the most intricate and affected ones, since important processes related to the upstream and downstream supply chain, as well as in-store ones, can become more accurate and simplified even eliminated, returning crucial profits to them. Indeed, some warehouse processes that imply significant human effort and time can be amplified due to this arisen technology. This paper refers to the mapping and modelling of the four most common warehouse processes, namely receiving, put-away, picking and shipping before and after the RFID implementation.