A provisional improvement notice must state—
(a) that the health and safety representative believes the person—(i) is contravening a provision of this Act; or(ii) has contravened a provision of this Act in circumstances that make it likely that the contravention will continue or be repeated; and
(b) the provision the representative believes is being, or has been, contravened; and
(c) briefly, how the provision is being, or has been contravened; and
(d) the day, at least 4 days after the notice is issued, by which the person is required to remedy the contravention or likely contravention.