The top causes of stress and frustration at work have been revealed in a new survey by American Express Insurance.

It found that 79 per cent of employees feel frustrated every day, with those aged 25 to 34 most likely to experience stress as a result of their job.

The top trigger of stress was found to be commuting to and from the workplace, which frustrates 31 per cent of workers.

Office politics were named as a major cause of stress by 16 per cent of respondents.

The inability to enjoy a healthy work-life balance is causing 22 per cent of workers to feel frustrated, while 29 per cent bemoan having no free time at the weekend.

Chris Rolland, head of American Express Insurance Services, said: "For many hard working Britons there are simply not enough hours in the day and things that waste our time have a big impact on stress levels."

According to the International Stress Management Association, taking regular breaks from work is vital to combat stress.

A spokesperson for the organisation said even just a quick walk around the office can help workers to clear their mind and should be encouraged.