Possible Clues:

• Painting over mask, we're told, is hard work
• Labour lag behind with introduction of alternative vote?
• Labour's hunt to secure a victory
• Tough situation
• To follow without books can be hard work
• Labour treasurer to be of use
• Labour backed right to get benefit
• New trial holds Virginia for hard labour
• Setback for right leads to advantage for Labour
• Excessive labour, toil or hard work