The rights panel has given four-week time to the state government to submit a report in this regard.
According to an NHRC statement, the Commission has issued a notice to the Chief Secretary of Haryana after taking suo motu cognisance of a media report stating that the two labourers died of asphyxia while cleaning the sewer.
Another labourer was rescued and hospitalised, the report said.
Terming the incident as a serious violation of human rights, the Commission said "factories and manufacturing ventures in the corporate sector should make profits, but not at the cost of human rights."