40일차. ♣ Unit 3. Leadership - LESSON 3 DESCRIBING A LEADER YOU ADMIRE - [Talking about a company's hierarchy] ※ Talking about a company's hierarchy *Horizontal or flat companies do not have a rigid hierarchical structure. Executives work with non-management staff and even customers on a regular basis. Vertical or tall companies usually have a strong hierarchical structure with a CEO at the top is..