Possible Clues:

• Person (or machine) dependably slogging away
• Drudge has artist's creation to mount
• Paper ___ (clerk who's a real nag?)
• Reliable toiler
• Productive one
• What jockey must do to become drudge
• Tireless laborer
• One giving steady service over time, having go and punch
• Employee who does the heavy lifting
• Trojan more serious about king Greek character imprisons