"It shall be the duty of every employer to ensure, so far as is reasonably practicable, the health, safety and welfare at work of all his employees."
"It shall be the duty of every employer to conduct his undertaking in such a way as to ensure, so far as reasonably practicable, that persons not in his employment who may be affected thereby are not thereby exposed to risks to their health and safety."
"those who may be affected thereby"
"In any proceedings for an offence under any of the relevant statutory provisions consisting of a failure to comply with a duty or requirement to do something so far as is practicable or so far as is reasonably practicable…it shall be for the accused to prove (as the case may be) that it was not practicable or not reasonably practicable to do more than was in fact done to satisfy the duty or requirement."
"..the statute prescribes the result which must be achieved. That is one thing. How the prosecution proposes to prove that this was so is another. The situation will vary from case to case. In cases such as the present, where a person sustains injury at work, the facts will speak for themselves. Prima facie, his employer or the person by whose undertaking he was liable to be affected, has failed to ensure his health and safety. Otherwise there would have been no accident."
"….when the legislation refers to risk it is not contemplating risks that are trivial or fanciful. It is not its purpose to impose burdens on employers that are wholly unreasonable. Its aim is to spell out the basic duty of the employer to create a safe working environment…… The law does not aim to create an environment that is entirely risk free. It concerns itself with risks that are material. That, in effect, is what the word 'risk' in the statute means. It is directed at situations where there is a material risk to health and safety, which any reasonable person would appreciate and take steps to guard against."
"It is helpful to ask whether a reasonable person would appreciate and guard against a risk in deciding whether the risk is more than trivial or fanciful."
"There shall, so far as is reasonably practicable, be provided and maintained safe means of access to every place at which any person has at any time to work, and every such place shall, so far as is reasonably practicable, be made and kept safe for any person working there."
"If safety is a relative concept, then foreseeability must play a part in determining whether a place is or was safe."
"Like Lord Mance, I prefer the approach of the judge, with the qualification that what is 'safe' is an objective question in the sense that safety must be judged by reference to what might reasonably be foreseen by a reasonable and prudent employer….Opinions as to what is safe may vary over time as, with developing knowledge, changes occur to the standards that are reasonably expected to be followed. I do not, therefore, agree with Smith LJ....that what is objectively safe cannot change with time. Standards of safety are influenced by the opinion of the reasonable person and foreseeability of risk plays a part in the forming of that opinion. If reasonable foreseeability is not imported into the concept of safety, then unless the Court of Appeal are right in holding that it is relevant to reasonable practicability, section 29(1) imposes an obligation on employers to guard against dangers of which they cannot reasonably be aware (insofar as it is reasonably practicable to do so). Breach of that obligation exposes the employer to potential criminal liability…. That is an unreasonable interpretation to place on the statute, which I would not adopt unless compelled to do so by clear words… In my view, there are no such words." and at [119] and [121]: "119. The only justification for interpreting 'safe' in section 29(1) as not importing the concept of reasonable foreseeability that it is unnecessary to do so because reasonable foreseeability is imported into the reasonable practicability qualification. I accept that, if it is imported into the reasonable practicability qualification, there is no need to interpret 'safe' as importing reasonable foreseeability in order to avoid an inexplicable mismatch between sections 14(1) and 29(1). … 121. But in my view, the foreseeability of a risk is distinct from the question whether it was 'reasonably practicable' to avoid it. Diplock LJ explained the point in Taylor v Coalite ….It is only if a risk is reasonably foreseeable and it was reasonably foreseeable that an injury would be caused that it becomes necessary to consider whether it was reasonably practicable to avert the risk. Thus, for the purpose of deciding the issue of reasonable practicability, it is assumed that the risk was reasonably foreseeable."