Leave wages eligibility during f&f in construction industry

Look into:

THE BUILDING AND OTHER CONSTRUCTION WORKERS (REGULATION OF EMPLOYMENT AND CONDITIONS OF SERVICE) ACT, 1996 (27 of 1996)

and Rules that are on respective state GOvt website  e.g;

Haryana Building and Other Construction Workers (Regulation of Employment and Conditions of Service) Rules, 2005.

https://hrylabour.gov.in/docs/labourActpdfdocs/HBOCW_Rules.pdf