• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
CommentaryFortune 500

Meet the former janitor who runs the world’s biggest oil company

By
Rex W. Tillerson
Rex W. Tillerson
and
Bethany Cianciolo
Bethany Cianciolo
Down Arrow Button Icon
By
Rex W. Tillerson
Rex W. Tillerson
and
Bethany Cianciolo
Bethany Cianciolo
Down Arrow Button Icon
July 9, 2015, 11:00 AM ET
rubin/wiese photography

Fortune 500 Insider is our newest online community where top executives from the Fortune 500 share ideas and offer leadership advice with Fortune’s global audience. Rex Tillerson, chairman and CEO of Exxon Mobil Corporation, has answered the question: What’s one quality that drives your company’s success?

Integrity is essential and irreplaceable. It is the most valuable asset for a person, a company, or a society seeking to build and progress.

Over the past decade, we have been reminded several times of how a lack of integrity in business and government can have severe consequences, undermining markets, institutions, and even costing people their jobs and savings. In the business world, we can point to instances when a lack of integrity has bankrupted entire companies — in sectors as different as finance, telecommunications, manufacturing, and energy.

Throughout my life and career, I have continually been impressed with the importance of integrity — whether it was growing up as a Boy Scout, working in one of my first jobs as a university janitor, or being a leader in a Fortune 500 company.

Simply put, integrity is the foundation for sustained success at every level and in every organization.

In the world of engineering, we often refer to structural integrity. For a building or a bridge to have structural integrity, it must be built with sturdy design and solid construction materials. Similarly, for an individual life or an organization to have integrity, it must be built on a foundation of honesty and trust, with a strong commitment to ethical action at every step. Compromise on ethical conduct is not an option.

Integrity is an essential value because it inspires an unflagging effort to do the right thing, the right way, every time — whether anyone is looking or not. It guides individuals and businesses alike, leading to higher standards, accountability, openness to improvement, and long-term excellence. In contrast, taking shortcuts leads to shortsightedness, poor results, or worse.

For leaders at all levels, it is also important to remember that integrity is universally valued. In a global economy, integrity crosses cultures and enables visionary international partnerships and joint ventures to advance and succeed. A shared focus on integrity makes trust and cooperation possible and enables employees taking on ambitious projects to honestly assess their performance, helping them to innovate and to improve constantly.

At ExxonMobil (XOM), we have identified four types of integrity that govern our business activities.

First, there is operational integrity, which helps us manage the risks of daily operations at oil and gas facilities, protecting lives and the environment. Second, there is scientific or technical integrity, which ensures we solve problems through open and respectful dialogue guided by science and the best practices from engineering. Third, there is personal integrity, which ensures we hold ourselves to the highest ethical standards on our way to a shared objective. And finally, there is managerial integrity, which builds trust and helps us set an example as both a leader and a follower — which are equally critical for fostering the culture of an organization.

For ExxonMobil, this multi-faceted application of integrity helps us maximize value and efficiency across the energy supply chain. It defines our approach to project execution at every stage all over the world — leading to capital projects that are on time, on budget, and accomplished in a way that is safe, secure, and environmentally responsible. Such successes leave an imprint on host governments, business partners, customers, and community members, and they also help frame the expectations and standards that will be applied to new opportunities.

The demands on leaders in the 21st century are significant. The challenges we face are many. But by recognizing the role of integrity in success, we can do our part to restore confidence in business, government, and markets. We can get and accept the feedback that allows organizations to change, improve, and compete more effectively.

On an individual level, integrity gives us confidence that we have the right compass to guide decisions — and create a culture — that will stand the test of time. In a world that is becoming more interconnected and more competitive, I believe a commitment to integrity will only grow in importance, acting as the distinguishing standard that defines authentic leadership, builds strong community, strengthens international cooperation, and ultimately enables us to excel and advance together.

About the Authors
By Rex W. Tillerson
See full bioRight Arrow Button Icon
By Bethany Cianciolo
See full bioRight Arrow Button Icon

Latest in Commentary

Julian Braithwaite is the Director General of the International Alliance for Responsible Drinking
CommentaryProductivity
Gen Z is drinking 20% less than Millennials. Productivity is rising. Coincidence? Not quite
By Julian BraithwaiteDecember 13, 2025
14 hours ago
carbon
Commentaryclimate change
Banking on carbon markets 2.0: why financial institutions should engage with carbon credits
By Usha Rao-MonariDecember 13, 2025
15 hours ago
Dr. Javier Cárdenas is the director of the Rockefeller Neuroscience Institute NeuroPerformance Innovation Center.
Commentaryconcussions
Fists, not football: There is no concussion protocol for domestic violence survivors
By Javier CárdenasDecember 12, 2025
2 days ago
Gary Locke is the former U.S. ambassador to China, U.S. secretary of commerce, and governor of Washington.
CommentaryChina
China is winning the biotech race. Patent reform is how we catch up
By Gary LockeDecember 12, 2025
2 days ago
millennial
CommentaryConsumer Spending
Meet the 2025 holiday white whale: the millennial dad spending $500+ per kid
By Phillip GoerickeDecember 12, 2025
2 days ago
Sarandos
CommentaryAntitrust
Netflix, Warner, Paramount and antitrust: Entertainment megadeal’s outcome must follow the evidence, not politics or fear of integration
By Satya MararDecember 12, 2025
2 days ago

Most Popular

placeholder alt text
Success
Apple cofounder Ronald Wayne sold his 10% stake for $800 in 1976—today it’d be worth up to $400 billion
By Preston ForeDecember 12, 2025
2 days ago
placeholder alt text
Economy
Tariffs are taxes and they were used to finance the federal government until the 1913 income tax. A top economist breaks it down
By Kent JonesDecember 12, 2025
2 days ago
placeholder alt text
Success
40% of Stanford undergrads receive disability accommodations—but it’s become a college-wide phenomenon as Gen Z try to succeed in the current climate
By Preston ForeDecember 12, 2025
1 day ago
placeholder alt text
Economy
The Fed just ‘Trump-proofed’ itself with a unanimous move to preempt a potential leadership shake-up
By Jason MaDecember 12, 2025
1 day ago
placeholder alt text
Economy
For the first time since Trump’s tariff rollout, import tax revenue has fallen, threatening his lofty plans to slash the $38 trillion national debt
By Sasha RogelbergDecember 12, 2025
1 day ago
placeholder alt text
Success
Apple CEO Tim Cook out-earns the average American’s salary in just 7 hours—to put that into context, he could buy a new $439,000 home in just 2 days
By Emma BurleighDecember 12, 2025
1 day ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.