What do you want the Courts to do?
Whatever legislation is passed, one still has to :
1) Accept the offer from the Employer
2) Somehow, find out what another employee is being paid (privacy issue here)
3) Absorb the costs of filing suit against the employer
4) Hope and pray a Court becomes an HR department and brings the other employee's privacy rights into the suit?
Another case of liberals looking for government to fix all your problems.