An employer of security guards may breach its duty of care by failing to rotate an employee out of a position of danger where a credible and serious threat has been made against that employee personally, even though security work inherently involves exposure to risk. The failure to rotate is a simple and inexpensive precaution that may be required where the magnitude of the threatened harm is high and the probability of its occurrence is not negligible. Speculative counterfactual scenarios (such as the assailant waiting for the employee to leave) are insufficient to displace a finding of causation where they are not established on the balance of probabilities.
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