GGB Dubai Municipality expects food businesses to operate a food-safety management system based on HACCP principles, and many premises are required to hold certification. Exactly what applies depends on your activity and category, and requirements change — so confirm the current obligation for your specific business with Dubai Municipality and the relevant food-safety authority rather than relying on a general rule.
From HACCP Certification in Dubai: Requirements, Timeline and the Process — the full reading, with the method behind this answer.