You’ve probably come across an occasional tip envelope on your hotel room night stand, dutifully signed by the woman who cleaned the room.

Expect to see a lot more of them.

Yesterday Marriott announced a partnership with The Envelope Please, an initiative begun by Maria Shriver to encourage guests to tip the attendant who cleans their room. The deal puts tip envelopes in more than 160,000 guests rooms at participating Marriotts — Courtyard, Residence Inn, JW Marriott, Ritz Carlton, you get the idea —throughout the U.S. and Canada, beginning this week, which happens to be International Housekeepers Week. Read more