Many workplaces have policies in place to guard against overuse of personal technology that gets in the way of productivity. People are prohibited from cell phone and social media use. It's a reasonable expectation in favor of productivity. Like all behavior at work, I think how it happens makes a difference. The process of rule making and enforcing can create more of an adult or parent-child culture. In an adult culture, people organize their own rules and compliance strategies. In a parent-child culture, superiors do this to inferiors. It matters which is reinforced because culture significantly impacts how people ultimately feel, behave and perform.