British workers are falling victim to 'Summer Seasonal Affective Disorder' (SAD) according to a poll by the Training and Development Agency for Schools (TDA).

The survey found 58% of UK workers thought they suffered from summer SAD - a variation on the condition caused by a lack of access to natural light which normally affects people in the winter months - to such an extent that they were completely de-motivated, unhappy and even close to quitting their jobs.

Of the 1,148 workers surveyed, 8% said they were more likely to call in sick during the summer months, around 20% said they spent their summer daydreaming out of the window while a futher 7% are so miserable they plan to look for another job.