What are the repercussions of one lost night’s sleep? Rudeness is just the start

Disturbed sleep can produce behaviour that has serious economic and social outcomes. As NHS doctors say, we need to change shift patterns

Prisoners of the Paula Principle: why women work below their abilities

This persistent injustice is also a waste of talent – and men as well as women need to see why before we can change it, says Tom Schuller

UK workers record lowest rate of sick days since records began

Britons were absent for an average of 4.3 days last year, with coughs and colds the most common cause followed by back pain, ONS figures show

Over half of NHS staff work unpaid overtime every week, survey finds

Annual survey reveals morale is high but workloads, sick rates and overtime highlight challenges

Spaniards’ lack of sleep isn’t a cultural thing – they’re in the wrong time zone

A Franco-era decision to adhere to Central European Time may be to blame for everything from accidents at work to a low birthrate. But that could change

Good vibes: selling sex toys online to fund sexual health programs

A new Australian social enterprise is tackling sexual objectification in advertising and an ‘unwritten moral code’ while selling sex toys for a good cause

No pink, no flowers, just science: Clue’s Ida Tin on the period-tracking app

The mobile health app’s chief executive and co-founder on building a diverse team and an app that doesn’t patronise women

Modern tribes: the office stoic

I’m usually fine with colds, but this one’s a stinker, almost fluey, my wife says, we’ve all had it, ruined everybody’s Christmas

‘No email after 6pm’: your advice on how to reduce workplace stress

Almost 10m working days are lost to stress in the UK every year. Readers share their stories of how they keep it under control

Let them eat nuts: dentists want office ‘cake culture’ to end in 2017

Royal College of Surgeons dental faculty also urges firms to provide fruit and nuts instead of biscuits at meetings