What's the point of having a corporate AMEX if you have to pay the bill yourself first?
(show of hands everyone, who has a corporate AMEX, not discover, visa or mc, but an AMEX, that does not get paid directly from your company?) Sounds more like a personal card at that point. Sure, if you have bad credit and/or are a foreign worker, you may not qualify for a personal CC and your company has to "sponsor" your credit card, but this is probably an extreme example.