My hon. Friend makes exactly the point that I was seeking to make. Even where people have rights to work, the lack of rights awareness and the intimidatory relationship between exploiter and exploited make this another card to play. I see the Minister is still shaking his head. Even if we were to restrict the measure simply to those who did not have the right to work, we are still giving the exploiter another card to intimidate and therefore make it less likely that people would be willing to whistleblow. I am happy for the Minister to intervene on me. Perhaps he could illustrate the evidence that suggests the clause will be of assistance—not the intuition, the belief, the view, but the evidence.