John often has to help “spread” the liquid concrete particularly when it is being delivered into a trench. Why should he not kneel in the concrete?

Explanation: • It will adversely affect the finish: No, this is not the major problem.
• It is not an effective way to work: No.
• It will make his trousers wet and uncomfortable: No, this may be true but it is not the most serious issue in this scenario.
• It can cause serious chemical burns to his legs: Yes, there is a very real risk of chemical burns from wet concrete.

Category: CPC Case Studies: Health and Safety