Basically trainees are not employees of the organisation.
11th August 2018 From India, Pune
You have not furnished details about Trainees Employed in your Establishment.You are paying consolidated pay? it means you are paying Salary.Designation is Trainee.Designation is immaterial for exclusion.Further you have not mentioned about your Certified Standing Orders including Clause about Trainees.
From the information furnishes, Trainees need to be covered under EPF
11th August 2018 From India, New Delhi