Firewall,
What about these then:
18. FLIGHT TIME LIMITATIONS
18.1. The maximum Flight Time Limitations will be in accordance with the Approved Flight Time Limitations Scheme specified in the Operations Manual, Volume 1.
and
20. ROSTERING
20.1. The Company and the Officer agree that rostering shall be in accordance with the Rostering Practices 2007 Policy Agreement dated 17th April 2007 (“RP07”) during the Period of Validity of that Agreement.
That enshrines those policies in your contract. In most countries that means that if they degrade those policies (without consent) they have broken contract law.