Possible Clues:

• Worked hard? It's time to get lubricated!
• Laboued long and hard
• Worked hard and long
• This worked when Edward was around with the lubricant.
• Worked hard, laboured
• With the aid of lubricant after tea, this worked
• Slaved
• Worked laboriously and long
• Worked extremely hard
• Worked to one who was a leader