While the actions of the parties may waive a contract clause, the requirement will be upheld when there are statutory requirements for written directives.

各方行为可能废弃某项合同条款， 如果书面指令存在法定要求， 则该要求适用。

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The report says recommendations include ensuring all children who "have been assessed as children in need have a written plan in place" and "all children receive regular monitoring visits within statutory timescales".

BBC: Sandwell children's services 'relies too much' on temps