The chain won't place signs in restaurants or have employees enforce the policy, however.
Customers in their 20s and 30s are defecting to fast-casual restaurants like Chipotle and Five Guys.
Investors are hoping the chain can emulate the rapid growth of Chipotle Mexican Grill.
If you look closely, you might think that the chain now bears a striking resemblance to Panera Bread.
Analysts see healthy earnings growth in these top names for the rest of the year.
More restaurants are encouraging diners to order by app or kiosk, hoping to cut costs and increase traffic.
The company is launching a new La Boulange restaurant in Los Angeles that will serve salads, sandwiches and cocktails.
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The precious metal has suffered as the dollar climbs, geopolitical risks abate and demand from key consumers slows.
The Market Dispatches column has been discontinued. Here's where to find the latest stock and business news on MSN Money, and the latest from market writer Charley Blaine.
MONEY & POLITICS
Breaking up big banks is an untested solution to the too big to fail problem that attempts to isolate and dismantle large, troubled institutions while protecting the rest of the economy.
Six weeks later, most Americans have forgotten about the 2014 tax season -- except those who didn't file by the April 15 deadline.
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