• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FinanceFuture of Work
Europe

Boss of U.K. bank that just turned its first profit says introducing a 4-day week for his 547 workers was way easier than going hybrid

Ryan Hogg
By
Ryan Hogg
Ryan Hogg
Europe News Reporter
Down Arrow Button Icon
Ryan Hogg
By
Ryan Hogg
Ryan Hogg
Europe News Reporter
Down Arrow Button Icon
June 18, 2024, 6:52 AM ET
Mark Mullen, chief executive officer of Atom Bank Plc, at IFGS 2022 summit at the Guildhall in London, U.K., on Monday, April 4, 2022.
Mark Mullen, chief executive officer of Atom Bank, introduced a four-day week to his staff in 2021.Chris Ratcliffe/Bloomberg via Getty Images

As banks worldwide grapple to find the right balance between flexibility and authority over their staff, the CEO of U.K. digital bank Atom has a simpler solution: eliminate the fifth day of work.

Recommended Video

Speaking to the Financial Times, Atom CEO Mark Mullen said the bank’s landmark four-day workweek, introduced in 2021, has been “considerably less challenging” than the clunky hybrid policies that are sweeping across many of the world’s biggest companies. 

To prove he’s right, Mullen points to lower attrition and a clean bill of health among his staff, in addition to the bank’s freshly secured profits.

Atom’s four-day week 

In 2021, Atom introduced a four-day week for its then-430 staffers. Contracted hours were to be reduced by 3.5 hours to 34 hours per week while employees’ wages remained the same.

In addition to the four-day week, Atom’s now 547-strong workforce is free to work from anywhere as part of the bank’s flexible policy, with no mandatory days in the office. 

Mullen says this incredibly loose structure has been a boon for day-to-day operations. 

“With four-day working, we planned the shift patterns, we planned the changes, we consulted on the changes of employee contracts… [Y]ou’ve got a resourcing model that delivers your business… [T]hat’s not what happened with flexible working,” Mullen told the FT. 

Those benefits contrast with mandated days back in the office under a hybrid structure, which Mullen said could make managers “afraid to ask their employees to come back to the office” while fostering a “rebelliousness” among workers.

Introducing the four-day week in 2021, Mullen said, “proved that working practices that may have seemed years away can be introduced rapidly.”

Since then, Mullen says, attrition and sickness rates at the bank have fallen, echoing findings from the world’s largest four-day workweek pilot, carried out in the U.K. in 2022. 

Atom, founded in 2013, recorded its first-ever profit last year, raking in £7 million ($8.9 million).

Banks diverge

Banks across the globe are clamping down on flexible working policies introduced during the COVID-19 pandemic. 

New U.S. regulatory policies have forced banks in the States to bring their staff back into the office five days a week. JPMorgan CEO Jamie Dimon has said staff who don’t want to return to the office should seek alternative employment.

Other banks are fighting to implement a new hybrid policy, often with clunky outcomes.

In February, Deutsche Bank introduced a restrictive remote-work policy, banning staff from working remotely on a Friday followed by a consecutive Monday. Most Deutsche employees are required to work three days in the office, while managing directors need to be in situ four days a week.

However, DBV union president Stephan Szukalski told Bloomberg that the policy has faced “enormous resistance among staff,” vindicating Atom CEO Mullen’s fears of rebellion.

Atom’s case is the latest example of some European banks going the opposite way to their U.S. counterparts.

Mike Regnier, the CEO of Santander UK, only took his $4.2 million role at the U.K.’s fifth-largest bank on the condition that he wasn’t required to work from the company’s London head office five days a week.

This allowed Regnier to continue living in Harrogate, some 200 miles from Santander’s U.K. headquarters.  

“I wouldn’t have wanted to be away from home five days a week in London. That wouldn’t have been good for the family or for me,” Regnier told the Guardian. 

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Author
Ryan Hogg
By Ryan HoggEurope News Reporter

Ryan Hogg was a Europe business reporter at Fortune.

See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • 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
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

© 2026 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.


Latest in Finance

cobalt
EnvironmentData centers
The AI boom is built on the backs of the world’s poorest, most exploited people, UN researchers find
By Abraham Nunbogu, Kaveh Madani and The ConversationApril 29, 2026
1 hour ago
hollywood
CommentaryMarketing
I spent 20 years learning to navigate an industry. Then I built a campaign for the man who’s dismantling it
By Matti YahavApril 29, 2026
2 hours ago
Current price of Bitcoin for April 29, 2026
Personal FinanceCryptocurrency
Current price of Bitcoin for April 29, 2026
By Joseph HostetlerApril 29, 2026
2 hours ago
Current price of Ethereum for April 29, 2026
Personal FinanceEthereum
Current price of Ethereum for April 29, 2026
By Joseph HostetlerApril 29, 2026
2 hours ago
Top CD rates from major banks April 29, 2026: Chase CDs, Bank of America CDs, Citibank CDs, and more
Personal FinanceCertificates of Deposit (CDs)
Top CD rates from major banks on April 29, 2026: Chase CDs, Bank of America CDs, Citibank CDs, and more
By Joseph HostetlerApril 29, 2026
3 hours ago
Current price of oil as of April 29, 2026
Personal FinanceOil
Current price of oil as of April 29, 2026
By Joseph HostetlerApril 29, 2026
3 hours ago

Most Popular

Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
2 days ago
‘The cost of compute is far beyond the costs of the employees’: Nvidia executive says right now AI is more expensive than paying human workers
AI
‘The cost of compute is far beyond the costs of the employees’: Nvidia executive says right now AI is more expensive than paying human workers
By Sasha RogelbergApril 28, 2026
1 day ago
'Take the money and run': Johns Hopkins economist Steve Hanke on why the UAE quit OPEC
Energy
'Take the money and run': Johns Hopkins economist Steve Hanke on why the UAE quit OPEC
By Shawn TullyApril 29, 2026
9 hours ago
Current price of gold as of April 28, 2026
Personal Finance
Current price of gold as of April 28, 2026
By Danny BakstApril 28, 2026
1 day ago
The U.S. military may have already used up half of its most expensive missiles, and it could take up to 4 years to rebuild its stockpiles
Politics
The U.S. military may have already used up half of its most expensive missiles, and it could take up to 4 years to rebuild its stockpiles
By Sasha RogelbergApril 24, 2026
5 days ago
Current price of silver as of Tuesday, April 28, 2026
Personal Finance
Current price of silver as of Tuesday, April 28, 2026
By Joseph HostetlerApril 28, 2026
1 day ago