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Health and safety isn't just about physical health ("Sector's safety record slated", July 14).

The Health and Safety Executive classes work-related stress as an occupational hazard and has approached universities about their poor record. Some studies suggest that academic staff have similar stress levels to accident and emergency staff. But, as far as I know, not one university has conducted any risk assessment of the costs of work-related stress or of the associated benefits of measures to reduce that stress.

Richard Hull Newcastle University Business School