Explanation:

Labour is a subject in the Concurrent List where both the Central & State Governments are competent to enact legislation subject to certain matters being reserved for the Centre.

• Article 23: Traffic in human beings and begar and other similar forms of forced labour are prohibited
• Article 24: No child below the age of fourteen years shall be employed to work in factories, mines and other hazardous occupations.
• Article 39 (d): “The State shall, in particular, direct its policy towards securing; that there is equal pay for equal work for both men and women.
• Article 43A directs the state to take steps to ensure workers participation in management of industries.

Hence only statement 2nd is correct.