The parliamentary panel on labour had written to various state governments seeking explanation for diluting the labour laws.
The panel members led by Mahtab questioned the central government officials about dilution in labour laws, especially increasing the working hours from eight to twelve, a source in the panel said.
Responding to the panel, the labour ministry officials said the changes attempted by state governments have to be according to the proposed four labour codes. They said since India is a signatory to the International Labour Organisation (ILO), the country cannot go beyond the stipulated eight hours, sources in the panel told PTI.