• 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

Latest in Finance

Chinese court rules firms can’t lay off workers on AI grounds
AIChina
Chinese court rules firms can’t lay off workers on AI grounds
By Victor Swezey and BloombergMay 3, 2026
26 minutes ago
Iran has collected a ‘pittance’ of less than $1.3 million in Hormuz tolls, Bessent says, as currency dives to fresh record low
PoliticsIran
Iran has collected a ‘pittance’ of less than $1.3 million in Hormuz tolls, Bessent says, as currency dives to fresh record low
By Adam Schreck, Melanie Lidman and The Associated PressMay 3, 2026
35 minutes ago
Landlords who were barred from evicting tenants during COVID are in settlement talks with DOJ to recoup as much as $1.5 billion
Real EstateHousing
Landlords who were barred from evicting tenants during COVID are in settlement talks with DOJ to recoup as much as $1.5 billion
By Michael Casey and The Associated PressMay 3, 2026
54 minutes ago
The dollar has fallen 10% under Trump. It helps big multinational companies but is a ‘hidden tax’ raising costs from vacations to groceries
North AmericaCurrency
The dollar has fallen 10% under Trump. It helps big multinational companies but is a ‘hidden tax’ raising costs from vacations to groceries
By Matt Sedensky and The Associated PressMay 3, 2026
2 hours ago
He started as a part-time Starbucks barista at 17. Now he’s an exec designing the menu
SuccessCareer Advice
He started as a part-time Starbucks barista at 17. Now he’s an exec designing the menu
By Orianna Rosa RoyleMay 3, 2026
3 hours ago
America’s twin scarcities: The 4-million-unit shortage in both housing and childcare is breaking families
Real EstateHousing
America’s twin scarcities: The 4-million-unit shortage in both housing and childcare is breaking families
By Sydney LakeMay 3, 2026
3 hours ago

Most Popular

Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
Personal Finance
Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
By Fatima Hussein and The Associated PressMay 1, 2026
2 days ago
Gen Z is rebelling against the economy with ‘disillusionomics,’ tackling near 6-figure debt by turning life into a giant list of income streams
Economy
Gen Z is rebelling against the economy with ‘disillusionomics,’ tackling near 6-figure debt by turning life into a giant list of income streams
By Jacqueline MunisMay 2, 2026
1 day ago
The American household just took an 81% margin cut. Wall Street hasn’t priced it in
Commentary
The American household just took an 81% margin cut. Wall Street hasn’t priced it in
By Katica RoyMay 2, 2026
1 day ago
Stop donating to Harvard and the Ivy League. There's a better option that MacKenzie Scott already figured out
Commentary
Stop donating to Harvard and the Ivy League. There's a better option that MacKenzie Scott already figured out
By Ed Smith-LewisMay 2, 2026
1 day ago
America got rich and got sad. A top economist says 2020 broke something that hasn't healed
Economy
America got rich and got sad. A top economist says 2020 broke something that hasn't healed
By Nick LichtenbergMay 3, 2026
5 hours ago
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
3 days ago

© 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.