MPs are marking the first anniversary of the Morecambe Bay cockle pickers tragedy with a motion in Parliament.
The tragedy sparked moves for new legislation
An Early Day Motion (EDM) has been put down by Scottish MP Jim Sheridan, whose private member's bill to regulate gangmasters became law last summer.
The EDM, so far signed by 39 MPs, remembered the 23 Chinese cockle pickers who died last February and welcomed the new act.
The TGWU, which backed the law, said it should now be "rigorously enforced".
The union, which represents many migrant workers, said the nation should remember that after the tragedy on 5 February 2004 it had collectively vowed 'never again'.
In the motion, Mr Sheridan said the new law would go some way towards protecting future workers from similar "unnecessary tragedies" and would stand as a "fitting testimony" to those who perished and their families".
Only 21 bodies were recovered following the drownings, but police believe 23 people died. The bodies were returned to China in November.
Four men and a woman are due to go on trial in September this year, charged in connection with the incident.