Part of a chain with 20 or more locations? Calories go on the menu
Federal menu labeling rules cover restaurants that are part of a chain with 20 or more locations operating under the same name and offering substantially the same menu. They must show calories next to each standard menu item and include two statements: that additional nutrition information is available on request, and that 2,000 calories a day is used for general nutrition advice. San Bernardino County's Environmental Health Services publishes a one-page summary. If you're not sure whether you're covered, ask your county's environmental health department before printing.
Source: San Bernardino County Environmental Health Services: menu labeling requirements (PDF)