Every employer shall ensure that there are in place effective methods for—
systematically identifying existing hazards to employees at work; and
systematically identifying (if possible before, and otherwise as, they arise) new hazards to employees at work; and
regularly assessing each hazard identified, and determining whether or not it is a significant hazard.
Where there occurs any accident or harm in respect of which an employer is required by section 25(1) to record particulars, the employer shall take all practicable steps to ensure that the occurrence is so investigated as to determine whether it was caused by or arose from a significant hazard.