Full reimbursement for travel expenses (eg, taxis, trains, black cars, hotels, rental cars, etc). McKinsey and BCG have recently moved to shift airfare spend to a corporate card.
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Most partners I worked with were constantly on Monday to Friday with relatively little sleep and loads of travel (often 3 different client locations within a week, sometimes on different continents) + devoted one day of the weekend for admin things / less time-critical work.