Date of Graduation


Document Type


Degree Name

Master of Science in Industrial Engineering (MSIE)

Degree Level



Industrial Engineering


Gregory Parnell

Committee Member

Terry Esper

Second Committee Member

Ed Pohl


Social sciences, Applied sciences, Supplier selection, Sustainability, Triple bottom line


Companies have primarily been focusing on the financial bottom line i.e., on increasing profits by increasing revenues and reducing costs. With high energy usage and environmental change posing threats to the environment and business operations, companies are now considering sustainability. Since some global suppliers have low cost labor, Social well-being and human development has also emerged as major goals of a company performing global operations. Focusing on these three goals is termed the "Triple Bottom Line" (TBL). We study and explore the TBL benefits that could be realized by an oil and gas company by focusing on sustainable suppliers. A company with a global supply chain cannot be sustainable without sustainable suppliers. This thesis develops the business case for sustainable suppliers using the TBL and presents the benefits of integrating sustainable suppliers into the supply chain. We consider a major oil and gas company and use multi-objective decision analysis to perform the analysis.