You will have heard about a few high-profile cases in which someone has lost their job because of a Facebook or Twitter post.
However, the number you can reference is probably quite limited. And yet, according to lawyers, how bosses control the use of social media by their staff and utilise it to judge job candidates, is one of the biggest legal employment issues currently on the agenda.
Last month, John Flexman, a former human resources executive, began a tribunal against his former employer, BG Group (a major gas exploration firm based in Reading, Berks), accusing the firm of forcing him out after he put his CV online through LinkedIn. He is thought to be the first person in the country to bring a case for constructive dismissal after a dispute with bosses over his profile on the professional networking site.
Mr Flexman is claiming hundreds of thousands of pounds from BG Group, where he earned a £68,000 salary from his job in charge of graduate recruitment.