Staff who arrive late at work are costing the economy £9bn a year, a new survey suggests.
More than half (56%) of all employees admit failing to attend meetings and work events on time at least once a week, it claimed.
One in 10 people revealed they had been late for a job interview, while 11% said poor timekeeping had contributed to the loss of a potential new client.
Almost a quarter of workers (23%) said they perform badly in meetings after arriving late, while nearly half (48%) said this adversely affected the performance of their colleagues.
Meanwhile, 82% said they believed being late was unprofessional, the Heathrow Express survey of 1,000 employees found.