Related Clues:

• Bonus puzzle, lacking number and name
• Applauds at regular intervals? That's a positive sign
• A sign of increasing significance
• In addition (to)
• Extra payment - reward
• Additional award
• The opposite of minus
• Payment over what is expected
• "But wait, there's more!"
• Grade qualifier
• Nice extra
• Incentive payment
• Extra pay, perhaps at Christmas?
• Positive — addition
• Extra payment