Related Clues:

• Hard work plus a new catchphrase
• Hit on an advertising catchphrase
• Work hard to get an advertising phrase that's memorable
• Work hard on a new catchphrase
• 'Work hard!' -- a new rallying cry
• Work hard with an advertising jingle
• Works as long as marketeer came up with it
• Ad agency creation
• 'I'm With Her' or 'Make America Great Again'
• 'I Like Ike,' e.g
• Apple's "Think different," e.g
• "Just do it," to Nike
• "We Have the Meats," e.g
• "Just Do It," for one
• 'I'm Lovin' It' or 'Just Do It,' e.g