Employers' liability and vicarious liability

This topic concerns two different ways in which an employer may be made to answer for harm connected with work. The first is direct employers' liability: the employer is personally at fault, usually in negligence, for failing to take reasonable care of the employee. The second is vicarious liability: the employer, or a defendant in a relationship akin to employment, is held liable for a tort committed by another person, even though the defendant may itself have taken all reasonable care.

The distinction is basic and examinable. Direct liability asks whether the employer breached its own duty. Vicarious liability asks whether the tortfeasor stood in the necessary relationship with the defendant and whether the tort was sufficiently connected with that relationship. The former is fault-based. The latter is strict in the sense that the defendant's own fault is not required, although it is not absolute: the boundaries are controlled by relationship and connection.

In Durham's first-year Tort module, this week deliberately returns to doctrines already studied. Duty, breach, causation, remoteness and defences remain essential. An injured employee must still prove actionable damage, factual causation and legal causation. Contributory negligence may reduce damages. Volenti is rarely successful in an employment setting, because economic pressure and the employer's superior responsibility make true voluntary assumption of risk difficult to establish. Ex turpi may arise where the employee's own criminal conduct is integral to the claim, but its use is now structured by the policy approach in Patel v Mirza.

The modern law is dominated by a policy judgment. Accidents at work and torts committed through work are not treated as merely private misfortunes between claimant and individual wrongdoer. They are often treated as losses arising from organised activity. Employers create risk, control systems, select personnel, insure, distribute cost, and profit from enterprise. Yet the Supreme Court has recently insisted that these justifications cannot be allowed to dissolve doctrinal limits. Barclays Bank plc v Various Claimants and WM Morrison Supermarkets plc v Various Claimants are the key corrective cases. They reject the assumption that vicarious liability should expand whenever a defendant has deeper pockets or the claimant is deserving.

For examination purposes, the best answers separate four questions. First, is there a direct claim against the employer for its own negligence? Secondly, if the tort was committed by another person, was that person an employee or in a relationship sufficiently akin to employment? Thirdly, was the tort committed in the course of employment, now expressed through the close connection test for intentional wrongdoing and the orthodox scope-of-employment inquiry for negligent acts? Fourthly, what is the practical consequence: full liability, apportionment, contribution, insurance, or a defence? Confusing these questions is the common route to weak scripts.

The modern rules emerged from industrialisation. In the nineteenth century, English law was reluctant to impose extensive responsibility upon employers for workplace injury. The employment relation was conceptualised through contract and individual assumption of risk; the worker was often said to have accepted ordinary hazards of the job. The notorious doctrine of common employment prevented one employee from recovering against the employer for the negligence of a fellow employee. That doctrine reflected laissez-faire assumptions and the judicial fear that industrial enterprise would be crippled by liability for accidents.

The common employment rule was eventually abolished, and the growth of workers' compensation and employer insurance changed the legal landscape. Tort did not become the only, or even always the primary, method of workplace compensation. But common law negligence developed a serious role in supplementing statutory and insurance arrangements. The employer came to be regarded not merely as a contracting party but as a person owing a personal duty to provide a reasonably safe system of work.

Wilsons & Clyde Coal Co Ltd v English is the central authority. The House of Lords identified the employer's personal duty to take reasonable care for the employee's safety. This duty includes competent staff, adequate plant and appliances, a safe place of work and a safe system of work. The point is not that the employer guarantees safety. The standard remains reasonable care. The point is that the employer cannot escape by saying that it delegated safety to a manager, contractor or fellow worker. If the system is unsafe, the employer is liable for its own breach.

Vicarious liability has a different history. Early formulations were tied to the master's responsibility for the servant's acts within the scope of employment. Control was once central: a servant was someone whose work the master could command not only as to what should be done but as to how it should be done. This control test became inadequate as modern employment involved professional discretion, hospitals, schools, religious bodies, banks, transport companies and large public institutions.

By the late twentieth century the law had two pressures. First, many serious wrongs occurred in institutional settings where the immediate wrongdoer was judgment-proof. Secondly, the language of authorised acts and unauthorised modes of doing authorised acts was especially strained in intentional tort cases, particularly sexual abuse cases. Lister v Hesley Hall Ltd marked the turning point. The House of Lords adopted the close connection test, asking whether the employee's torts were so closely connected with employment that it was fair and just to impose liability.

The subsequent expansion was significant. Courts extended the relationship limb beyond strict contracts of employment to relationships akin to employment, particularly where defendants had created or significantly enhanced risk through enterprise-like activity. Catholic Child Welfare Society, Cox and Armes are important in that movement. But the Supreme Court's 2020 decisions in Barclays and Morrison emphasise restraint. The law is not a general compensation scheme. Independent contractors usually remain outside vicarious liability, and an employee's personal vendetta is not converted into an employer's tort merely because employment supplied the opportunity.

The historical movement is therefore not linear expansion. It is a movement from status and control towards risk, enterprise and institutional responsibility, followed by a modern insistence that policy be mediated through legal tests.

Begin with direct employers' liability. An employer owes employees a duty to take reasonable care for their safety. The duty is personal and non-delegable in the limited sense that performance may be delegated but responsibility may not. It does not make the employer an insurer. The claimant must prove breach and causation in the ordinary negligence framework covered in Weeks 5 and 6. However, the content of reasonable care is affected by the employment context: the employer has organisational power, knowledge of recurring risks, ability to design systems, and capacity to train and supervise.

The conventional categories are convenient but not closed. The employer must take reasonable care to provide competent fellow employees, suitable plant and equipment, a safe place of work, and a safe system of work. The safe system category is often the most important. It covers not merely formal rules but the practical way work is organised: workload, training, protective equipment, supervision, warnings, rest breaks, risk assessment, maintenance, and the response to known hazards. A paper policy is not enough if the actual practice is unsafe.

Foreseeability and breach must be analysed at the proper level. It is usually insufficient to say that work is dangerous. The issue is whether this employer ought reasonably to have guarded against this risk in this setting. Cost, practicality, seriousness of harm and industry knowledge matter. In stress-at-work claims, the courts require attention to what the employer knew or ought to have known about the employee's vulnerability and workload. In manual handling or machinery cases, known recurring risks more readily support breach.

The statutory framework supplies standards and evidence, although after the Enterprise and Regulatory Reform Act 2013 many health and safety statutory duties no longer automatically generate civil liability unless the legislation provides otherwise. That does not make regulation irrelevant. Breach of a statutory standard may be powerful evidence of negligence, and criminal enforcement norms help define what a reasonable employer ought to do.

Wilsons & Clyde Coal Co Ltd v English is the foundation of direct employers' liability. It establishes that the employer's duty to take reasonable care for safety is personal. The employer may appoint managers and supervisors, but the employer remains legally responsible if reasonable care is not taken in the provision of a safe system, competent staff, safe plant or a safe place. This is not strict liability. The employee must still prove breach. But it prevents the employer from escaping by pointing to internal delegation.

Ready Mixed Concrete is the classic modern starting point for identifying employment. It rejected any single test and placed emphasis on mutual obligations, control and consistency with a contract of service. Although developed in a different context, it remains useful in tort where the relationship limb is disputed. Its importance has been qualified but not erased by the later language of relationships akin to employment.

Lister v Hesley Hall is the decisive modern case on intentional wrongdoing. A boarding school warden sexually abused pupils. The House of Lords held the employer vicariously liable because the abuse was closely connected with the warden's employment. The older Salmond formula, which distinguished authorised acts from unauthorised modes of authorised acts, was too artificial for abuse of entrusted authority. Lister made institutional risk and entrusted functions central.

Dubai Aluminium extended the close connection approach beyond sexual abuse into commercial wrongdoing. A partner's dishonest assistance in a fraud could render the firm liable where the wrongful conduct was closely connected with acts the partner was authorised to do. The case shows that close connection is not confined to physical workplaces or personal injury.

Catholic Child Welfare Society developed the relationship limb. Members of a religious institute teaching at a residential school were not employees in the ordinary contractual sense, but the relationship between the institute and the brothers was sufficiently akin to employment. The Supreme Court emphasised policy factors: the defendant was more likely to have means to compensate, the tort was committed as a result of activity undertaken on its behalf, the activity formed part of its enterprise, and the enterprise created or enhanced risk.

Cox v Ministry of Justice confirmed that the relationship limb can extend beyond contracts of employment. A prisoner working in a prison kitchen negligently injured a catering manager. The Ministry was vicariously liable. The prisoner was integrated into the prison's operation and performed work assigned by the defendant. The case is not authority that all compulsory relationships suffice; rather, it shows that paid employment is not the only enterprise relationship.

Mohamud v WM Morrison Supermarkets plc expanded, or at least boldly applied, the connection limb. A petrol station employee assaulted a customer after an initial customer-service interaction. The Supreme Court held the employer liable. The employee's job was to attend to customers, and the assault was treated as a continuous sequence. Its breadth made Mohamud controversial.

The 2020 Supreme Court cases reined the doctrine in. Barclays held that a self-employed doctor examining prospective employees was not in a relationship akin to employment. Morrison held that an employee's malicious disclosure of payroll data was not sufficiently connected with his employment. Together they warn against turning vicarious liability into liability for mere opportunity.

See practice questions section below.

See further reading section below.