A valid measure-that is, one with construct validity-reflects what it claims to reflect and not something else.
They need measures to reflect the claims.
Part and parcel of that agreement was an understanding that the H-2 workers would be entitled if they otherwise qualified, and only if they otherwise qualified, to legal services representation, because without that, the protections contained for those workers, the housing protections, the domestic, the transportation protections, the piecework rate and adverse impact wage rates protections become utterly meaningless.