Where an employer's system of work permits employees to follow a particular practice, an employee who follows that practice and is injured is not contributorily negligent merely because they had general knowledge of lifting risks, absent evidence that they had a specific doubt about the safety of the particular lift on the occasion in question. A trial judge's finding that a plaintiff is fit for pre-injury work must be supported by medical evidence that actually addresses the demands of that occupation; an opinion that a plaintiff can continue in their current (different) occupation does not support such a finding.
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