It is getting more and more challenging to find the right employee with the right skills. To help, we should adjust what we are looking for and focus on core competency. The terms Skills and Competencies are used, virtually, interchangeably. In fact, with many HR practitioners, competencies seem to only relate to “Behavioral” competencies as defined in a Competency Dictionary. But this really is not the case. If you are hiring in demand planning or any similar field, you need to know what to look for and how to hire the right person. So, in this article we attempt to define the difference between Skills and Competencies, and provide some insight into the different types of core competencies that are critical to demand planning, forecasting, data science, and related fields.