Two-thirds of respondents to a recent survey mentioned missing email as a fear. Other nightmares for traveling executives include traffic problems, drained mobile phone batteries, IT breakdowns and even finding a stain on their tie when meeting clients.

More than half of the 511 workers surveyed by the U.K.’s BT Openzone said the amount of time they need to spend out of the office has increased over the past two years. And when asked what their greatest concern would be when out of contact with the office, 42 percent said it would be that they wouldn’t be able to carry on working while on the move.