Posted By A Campbell
I very much doubt that you would be in the realms of British or EU legislation out there and so would need to look if there is any relevant legislation within the country being worked in.

Alternatively the oil company may have some standard they use themselves that they expect their contractors to abide by... but in many cases it's really up to the people carrying out the work as to what they are willing to work and in some cases different conditions.

I worked with people from the philippines that spent almost a year offshore with a short break sometimes onshore... and home for a few months.

Posted By bill strachan1
Many countries in the Middle East (being presumptious about deserts) have their own labour laws which normally defines working hours, days off etc, so you could check with that. If not, previous responses are the way forward.

Posted By Andrew Lochlyn Ure
Bill's spot on - Middle Eastern countries have Labour Laws which are govern working time to a very basic level. The more responsible companies make sure their rotation schedules comply. I work 62/29 i.e. two months on one month off in the desert, which complies with our local Labour Laws.