Tulsa is a city built on the oil, gas and coal industries, and while it has been through some rough times, energy is still an important part of the city’s economy. The energy industry is second only to healthcare as the largest employer in the area. Seven energy-based Fortune 500 companies call Tulsa home providing a solid base for upstream and midstream operations. Aside from exploration, logistics, support services, and sub-sectors for refining, construction, and manufacturing, Tulsa has an abundance of professional specialists in tax, administration, and engineering talent as well. Overall the energy sector in Tulsa produces $29 billion in economic output and carries a payroll in excess of $6 billion.