Have you called a man bald, sent a birthday card to someone who didn't really want it, or sung a Victoria Wood song in a suggestive way?

Well then you could have broken the law, according to the rulings in a series of employment tribunals.

Ever air-kissed a colleague?

Then don't worry, as that 'cannot be regarded as 'unwanted conduct of a sexual nature', a judge found.

To assist you as you go about your working day, here is a handy guide of the office behaviours previously deemed lawful and unlawful by employment judges.