Rs 80,000 per month is well above the threshold limit set under the EPF & MP Act. If these employees were not previously covered, then you can exclude them. However, if they are existing members of EPF, meaning they had PF in their previous company, they should also be covered in your establishment.
Declaration in Form 11
You should obtain a declaration in Form 11. This form is to be submitted by the employee upon joining your company, declaring whether or not they are an existing member. If the employee declares that they are not a current member and their salary exceeds Rs 15,000, they can be excluded from PF coverage.