policy, form, or condition of employment, including by any predispute arbitration agreement. (B) Predispute arbitration agreements Except as provided under subparagraph (C), no predispute arbitration agreement shall be valid or enforceable if it requires arbitration of a dispute arising under this section. (C) Exception for collective bargaining agreements Notwithstanding subparagraphs (A) and (B), an arbitration provision in a collective bargaining agreement shall be enforceable as to disputes arising under the collective bargaining agreement. (4) Requirement to post notice of rights and remedies Any non-Federal employer receiving covered funds (and the head of the applicable agency in the case of a Federal personal services contract involving covered funds) shall post notice of the rights and remedies provided under this section. (d) Rules of construction (1) No implied authority to retaliate for non-protected disclosures Nothing in this section may be construed to— (A) authorize the discharge of, demotion of, or discrimination or other reprisal against a protected individual for a disclosure other than a disclosure protected by subsection (a)