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The Four-Day Work Week: Good for You, Great for the Planet?

  • Writer: Luke Barnes
    Luke Barnes
  • Aug 4
  • 4 min read



While most conversations about the four-day work week focus on happier employees, lower stress levels and finally having time to tackle that mountain of laundry, there's another major winner that deserves some attention: the environment.


No, giving people an extra day off won't magically reverse climate change overnight.


The Earth isn't going to throw us a thank-you parade because we skipped one Monday meeting.


But reducing the standard working week could make a meaningful difference to our carbon footprint in ways that are surprisingly practical.



Less Commuting, Less Pollution


Let's start with the obvious one. If people only travel to work four days instead of five, that's around a 20% reduction in commuting for many employees.


Fewer cars on the road means fewer greenhouse gas emissions, less fuel burned and cleaner air. It also means less time spent sitting behind someone who insists on braking every three seconds for absolutely no reason.


Traffic congestion isn't just annoying; it's wasteful. Vehicles stuck in traffic burn fuel while barely moving, pumping unnecessary carbon dioxide and air pollutants into the atmosphere. Cutting one commuting day every week means millions fewer journeys each year if the policy is adopted on a large scale.


That doesn't just benefit the climate. It also means quieter roads, improved air quality and fewer pollutants linked to respiratory illnesses.



Offices Don't Need to Be Open All the Time


Office buildings are surprisingly hungry beasts. They consume electricity for lighting, computers, lifts and coffee machines that somehow require industrial amounts of power just to produce mediocre cappuccinos.


Then there's heating in winter, air conditioning in summer and enough printers to remind everyone that yes, paper jams are still a thing (technology has improved so much since the 90s, but we still have paper jams? At least we don't have limp bizkit anymore)


If businesses close their offices for an extra day each week, they can significantly reduce electricity and energy consumption. Depending on how a building operates, energy use can fall by around 10–20%. Multiply that across thousands of workplaces and suddenly you're looking at a substantial reduction in national energy demand.


The lights are off. The heating is down. The photocopier isn't plotting its next rebellion. Everyone wins.



Smaller Changes Add Up


The environmental benefits don't stop with commuting and electricity; an office closed for an extra day also produces less waste.


Think about everything that gets used during a normal workday:


  • Disposable coffee cups

  • Printer paper

  • Kitchen supplies

  • Cleaning products

  • Plastic packaging

  • Water


None of these are huge climate villains on their own, but together they add up. One fewer day of office activity means less consumption across the board.


It's a reminder that sustainability isn't always about dramatic lifestyle changes. Sometimes it's simply about doing slightly less of the wasteful things we've normalised.



More Time Can Mean Greener Choices


One of the less obvious environmental benefits is what people actually do with an extra day off. When life isn't permanently squeezed between work, commuting and trying to remember whether there's anything edible in the fridge, people often have more time to make lower-impact choices.


Cooking instead of ordering takeaway.

Walking instead of driving.

Repairing something instead of replacing it.

Gardening.

Cycling.

Volunteering.


None of these make headlines, but collectively they can reduce consumption and waste while improving quality of life.



The Catch: Not Every Friday Is Eco-Friendly


Before we start engraving "four-day week saves Earth" onto commemorative plaques, there's an important catch. An extra day off only helps the environment if people don't replace commuting with even more carbon-intensive activities.


If everyone celebrates their three-day weekend by booking frequent flights abroad or driving hundreds of miles every Friday, many of the environmental gains quickly disappear.


Air travel, in particular, carries a hefty carbon footprint. A single return flight can produce emissions that outweigh months of commuting savings for one person.

Likewise, spending every extra day shopping or increasing household energy use can chip away at the benefits.


In other words, the four-day work week isn't a magic environmental cheat code. It's more like a helpful bonus that works best when paired with certain choices.



A Piece of the Bigger Puzzle


It's also important to keep expectations realistic - a shorter working week won't solve climate change on its own. The biggest environmental improvements still depend on cleaner electricity, better public transport, more efficient buildings and continued investment in renewable energy.


What the four-day work week offers is another tool in the box. It reduces unnecessary travel. It lowers energy demand. It cuts waste. It encourages healthier, less frantic lifestyles that often happen to be more sustainable.


That's a pretty decent return for simply giving people back one day of their week.


Maybe if the fat cat CEOs upstairs actually cared about sustainability they'd look into it.



The Bottom Line


The four-day work week has earned plenty of praise for improving wellbeing, reducing burnout and boosting productivity. The environmental benefits are an added bonus that deserves far more attention.


Fewer commutes mean lower emissions. Offices consume less energy. Waste decreases. Air quality improves. Cities become a little quieter. People often have more time to make thoughtful, lower-impact choices.


Of course, it's not guaranteed. The environmental outcome depends on how businesses implement the policy and how people spend their extra day.


But if that extra day is spent exploring local parks instead of airport departure lounges, cooking at home instead of grabbing another disposable takeaway container, or simply enjoying a slower pace of life, then the planet gets to enjoy the long weekend too.


Maybe saving the environment doesn't require revolutionary new technology. Maybe it starts with cancelling one meeting.



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