In some jobs there are no specific legal guidelines. It does really depend on what your job is, but the 'Working Time Regulations' clearly states that you do not have to work in excess of 48 hours per week. This applies to ALL jobs. Your contract of employment will have a page that you have to sign to say that you do not mind working in excess of 48 hours. If you sign it, your employer can ask you to work any amount of hours. The only breaks that are legally required to be taken are in transport eg. lorry drivers, coach drivers, bus drivers etc. They must take a break at specified times, for public safety reasons. Also, catering and young people have special rules too. Most jobs have one half an hour break at some point for lunch during an eight hour working day.