Section 15A of the Central Industrial Security Force Act, 1968 imposes restrictions on members regarding associations, etc. It states that no member shall, without previous sanction of the Central Government or prescribed authority, "be a member of, or be associated in any way with, any trade union, labour union, political association or with any class of people or organisation, association or union, or be a member of any society, institution or association or organisation that is not recognised as part of the Force or is not of a purely social, recreational or religious nature".