Dear Sir or Madam, please take a few minutes of your time to complete the following questionnaire.
Please imagine you complete a 10 hour shift in this circumstance:
You start work at 6am, so need to be up for at least 5am. You need 30 minutes for driving either side, and will be on your feet all day. The job is quite physical and you don't get to sit down much. You get a half hour break and two 10 minute breaks (morning and afternoon).