What was the condition of para-teachers at the initial time, think!
Now a days there are many changes come time to time, in short form: 60yrs, Rs. 1,00,000/-, increasing salary, M.L, maternity leave etc. So, ‘demand’ may fulfill your necessity partially or wholly. Now as fer as ‘demand’ is concern there is nothing illegal to me. They may demand something for their job as we ‘demand’ many thing.
Now, question is about same load, acc. to their nature of works, their work load must be less than any permanent teacher. But I think, in case of examine the answer script, making tabulation sheet, making results …. they take the same load as a permanent teacher.
One thing more para-teachers duty is only to teach backward (by merit) students up to class-VIII in separate, but we put them in a same routine, in the same classes (up to VIII) as permanent teachers are.