LAD são bons no trabalho?

«Portable music players such as iPods are increasingly showing up on the job, a trend that's being praised as a boon to productivity as well as criticized as a safety risk and employee distraction (...) The use of MP3 players isn't music to everyone's ears. While many employees who use the miniature music players believe they help them focus on work by blotting out background noise or revving up their energy, some employers see MP3 players as creating a distraction from work — and a safety and security risk.»