I think this sums it up quite nicely

We're not allowed to talk on our cell phones while we're on the clock at work. Which makes sense except when you first get there and there is no one sitting at your tables yet and there is nothing to do. And that is when I walked into the back dining room to make a short call. And then that is when my manager threw a peanut at my back, reminding me, hey! no talking on the phone!