With the coming of the new rules on STEM Optional Practical Training (OPT), many students and employers are wondering whether they should actually hire students on OPT or not. This article covers some specific situations as they relate to employers especially consulting companies. The article includes but is not limited to their business model and whether they might encounter issues regarding hiring OPT work permit holders. Note that this article does not cover every single issues related to the OPT but it only tries to give a perspective on the OPT employment.