Possible Clues:

• Go on Social Security, maybe
• Go back and change the wheel when you've finished work
• One is willing to go and do this
• Move to Florida, maybe
• Put out to pasture
• Conclude employment or go to bed
• Go to bed or quit work for good
• Go back and change the wheel, by the sound of it
• Go back - but not to work
• Leave one's post, possibly