Thank you very much, Shri Subbaraoji, for updating me with the latest developments. My reply to the post is regarding the legal issue of the engagement of contract labor during a strike of regular employees. I have quoted the provisions in the Industrial Disputes Act of 1947. It is up to that member whether to follow or not.
Contract Employment and Legal Regulations
The issue raised by you regarding contract employment falls under the "Contract Labor (Regulation and Abolition) Act of 1970." Legally, there are regulations (and not a ban) in India on engaging employees on a contract basis to ensure non-exploitation, safety, and welfare.
Those who have grievances can get them redressed through collective bargaining, various grievance redressal systems, and legal forums. If any authority empowered to enforce fails, it can also be questioned using the RTI Act onwards.
I appreciate your words.