walter :
would german government employees/representatives draw a "travel advance" for their various travel expenses in advance of travel or would the government agency be billed directly by the airline , hotel etc for expenses ?
so called "business" credit cards are quite common here . american express has a special arrangement with many businesses (i think with governments too) , where they sent a "consolidated" statement to an employer for all employees holding a credit card through their companies with them .
that SHOULD give companies quite good control over the expenses charged by individuals .
of course , if controls are lax , the card-holder can pretty well charge anything
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hbg