Business travel is back to pre-recession levels, but road warriors can expect less legroom than before. Traveling for work used to be somewhat cushy—grueling schedules and time away from family may have earned corporate travelers a lie-flat seat on a red-eye flight, a sporty rental car or room service after a day of meetings. But more companies are equating business travel with budget travel, so they're asking employees to forgo some perks and trade down to lesser hotels and are banishing even senior executives to coach.

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