So arbeitet man bei 37signals:

Each employee gets a credit card and is told to use it wisely. No expense reports, no justifications, no haggling. They simply forward the receipts to a shared inbox in case of an audit. We have not had a single case of abuse in the few years we?ve run the program. People will live up to your high expectations.

David Heinemeier Hansson in einem Beitrag für NFIB. Leider nicht mehr online.