A law regulating the sex industry was revised Friday to help curb human-trafficking and to rein in advertising and other activities used to solicit customers.

The revised Entertainment Establishments Control Law, which will take effect in May, will require sex parlors to check employee work permits.

Parlor operators charged with human-trafficking under the Penal Code will be barred from receiving a sex-parlor license under the revised law.

Unlicensed sex establishments that advertise will be subject to fines of up to 1 million, yen while penalties have also been established for the distribution of sex-industry leaflets to homes and for aggressive touts.

The House of Councilors passed the bill Friday.