The law assumes that if the employer benefits from the employee’s work, it is onlyfair they should accept liability for wrongdoing that happens during that work.
In practice, many employers pass on liability costs to consumers – e.g., charging for PPE during COVID – so the financial burden doesn’t always harm the business directly.
Despite the perceived fairness, this principle undermines fault-based liability, as the employer may have acted entirely reasonably but still be liable for another person’s wrongdoing.