My MIL is Muslim. When we are visiting and it's time to pray she finds a quiet corner, unrolls her rug, does her prayer, and is back before the tea has finished steeping.
I've spent more time getting to the break room at work than she has on afternoon prayer. So I fail to see the connection between the 2-3 scheduled daily prayer times and production. If that is the case, coffee, cigarettes, lunch, and bathroom breaks are equal contributors.