Are you sure your employer does not have an agreement with Marriott to retain the incentives in lieu of you receiving credit as an individual? I don't know the details of how it works, but I've heard it mentioned here before that some companies arrange discount rates that are not "qualifying rates" for individual MR benefits. The fact that your employer is pre-paying your stay may be a clue since it does not follow the normal method of an individual paying with a corporate/personal credit card in their name and getting reimbursed by the employer later. You may be directing your ire at the wrong entity... Do you receive credit for your stays in other programs (HHonors, Priority Club, etc.)?