Australian employers owe their staff an astounding 123 million days off. Statistics show one in four full-time workers stockpile annual leave. Why? Some avoid taking time out because they abhor the build-up of work around the break, while others save up their leave as an income protection policy. And there are always the "indispensible" workplace martyrs. Whatever the reasons, the impact of such behaviour is an all-round negative – for staff, employers and productivity. Maybe it's time to take a break.