The actual text of the Constitution is the final and absolute yardstick all laws are measured against. When the Supreme Court considers the constitutionality of any law it must measure the law against the original text of the constitution and its plain meaning when it was written.
Notice of working hours/changes. Your employer must give you reasonable notice of any changes to your working hours, such as cancelling your shifts. They may request last minute changes (such as ringing you that morning to say that they do not require you to work) and you can choose to agree to this change.
Without prejudice to section 4, first sentence, of the Working Time Act, if the working time exceeds ten hours, the rest break shall have a duration of at least 60 minutes. By way of derogation from section 9 of the Working Time Act, workers may be employed to work on Sundays and on public holidays.