I want to ask how many hours work for all jobe in...

We would like to inform you that your question is not related to our field of work as legal consultants in the legal department. We are specialized in providing legal advice to our clients. In addition, the site does not have any relation with any government or private entities
It should be noted that after reviewing your inquiry and legal scrutiny we would like to inform you that

According to the UAE Labour Law the maximum working hours in Dubai are eight hours per day, or 48 hours per week (the maximum for those working in hotels, restaurants, and certain other industries is 9 hours per day).

Any work over this time is classified as overtime, and should be paid at rate of 1.25 times the regular hourly rate.