A report by the Institute of Alcohol Studies (IAS) claims that 42% of people are regularly hungover at work, meaning that a staggering 58% of your colleagues have no viable excuse for their poor performance.
Workers in the hospitality and leisure sectors come out on top with 52% of those that make it into work likely to be operating with a "bastard behind the eyes" while holding down a semi-digested kebab and thirteen Espresso Martinis.
A close second are retail and construction workers who both get a free pass for turning up late and putting in a lacklustre performance on account of the massive bender they may still be on.
While if you've ever wondered why your boss makes those frankly delusional decisions, it's because she's probably still rat-arsed; 55% of people earning £60,000 admit to regularly turning up to work pissed or hungover, according to the IAS study.
Commenting on the report, productivity expert Charles Fishlove-Smyth told us, "While the IAS’ headline figure of an estimated cost to industry of £1.4 billion due to hangovers is impressive, I'd be more worried about the performance of the 58% of employees that don't have an excuse.
"Take a look around the average office, according to this report nearly sixty per cent of those people are unhindered by the long term effects of alcohol abuse or a night spent driving the porcelain bus.
"As an employer, I'd be more concerned by how shit those staff are than worrying about the ones bravely battling their way through an 8-hour shift with 50% of their brain function blitzed from drinking corner shop vodka on a school night.”