Dear Rnc1471,
As per your post contents , it is crystal clear that BOCW Act/ Rules is fully applicable to your establisgment .
The Govt. Labour Authorities are absolutely right by issuing a notice to your establishment. You have to statutory abide the core provisions of the BOCW Act/ rules & Labour Welfare cess Act/ Rules and follow the line of action in terms of compliances. Any deviation will attract penal action under the provisions of the said Act/ Rules .
Secondly , since you have had engaged "Inter State Migrant workmen" for carrying out the said construction activity , the "Inter State Migrant Wormen Act/ Rules" is also applicable . Pls abide the core provisions of the said Act/ Rules, otherwise any devaition of the same , would attract penalty / punshiment from the concerned Govt. Labour Authorities.
Thanks,
AK Sharma