Dear Mr. Vinod,
Regarding quarry.
Step 1
You should prepare the list of employees particulars. According the date of joining you allot a employment number to them. (it should be a statment manned in xlsheet.like sl.no./emp.no./name/designation/date of joining/fathers name/no.of years previous sevice/ educationcla qualifications etc).
Step 2
All Statutory records get it update.
Step 3
If PF / ESI covered issue declaration formats to each employee (in duplicate)
Step 4
Make a HR policy and submit to you management.
Regards,
PBS KUMAR