Case Studies are largely used in other fields such as management and law but are not very common in economics instruction. The use of case studies in economics is pertinent to provide stronger real-world grounds for the theory we present to students. Volpe (2015) describes how case studies can be used in economics teaching.
Below is a list of case studies that you can use with your students in the classroom.
American Airlines and US Airways - Sipic and Carbaugh (2014)
United Airlines and Continental Airlines - Carbaugh and Ghosh (2010)
Staples and Office Depot - Carbaugh and Sipic (2017)