Possible Clues:

• Put or call
• Choice of portion
• Work on it for a change - it's an alternative
• The alternative is to get into trouble at work
• By the sound of it, chews 23 down under the broken pot
• Contract clause
• The alternative is to change into after work
• Nothing soft turning into what may be?
• Potion (anag.)
• Choice work - turn it over