In employment law, the frolic and detour doctrine decides whether an employer has to pay for harm an employee caused after wandering away from assigned work. A detour is a small, foreseeable side trip that keeps the employer liable under respondeat superior. A frolic is a bigger, purely personal departure that cuts the employer’s liability off and leaves the employee standing alone. Most fights in this area are about which side of that line the employee’s conduct falls on, because the line is drawn by degree.
The Core Distinction
A detour is a minor deviation that stays within the general scope of employment. A delivery driver who stops for coffee, takes a slightly different route, or pulls into a gas station is on a detour. The employer stays vicariously liable for anything that happens during these side trips because they are the sort of thing any reasonable employer expects a human being to do during a workday.1Legal Information Institute. Frolic and Detour
A frolic is fundamentally different. The employee has abandoned work duties to pursue a personal objective. If the same delivery driver skips the route entirely to visit a friend across town or drives the company truck to a concert, that is a frolic. The employee is acting on their own, not for the employer’s benefit, and the employer generally bears no responsibility for what happens.1Legal Information Institute. Frolic and Detour
The vocabulary comes from an 1834 English case, and courts have been drawing the same line ever since. What has changed is how they draw it.
How Courts Tell Them Apart
The Restatement (Second) of Agency, Section 228, provides the foundational test. Conduct falls within the scope of employment only if it is the kind of work the employee was hired to do, occurs substantially within the authorized time and space limits, and is motivated at least in part by a purpose to serve the employer.2The American Law Institute. Sotomayor Dissent Cites Restatement 2d of Agency Conduct that is completely different from what the employer authorized, far outside the acceptable time or geographic limits, or driven entirely by personal motives falls outside the scope.
When an employee has strayed, courts weigh a cluster of considerations:
- How far the employee strayed. A two-block side trip reads very differently from a 30-mile trip across town.
- How long the deviation lasted. A five-minute stop is harder to call a frolic than a two-hour personal errand.
- Whether the employee was partly serving the employer. If any work-related purpose was mixed in with the personal one, courts lean toward calling it a detour.
- Whether the deviation was foreseeable. Employers should expect employees to grab lunch, stop for gas, or take brief personal calls.
- The nature of the job. Employees with a broad territory or flexible schedule get more latitude than someone assigned to a fixed workstation.
The California Court of Appeal captured the approach in O’Connor v. McDonald’s Restaurants, listing “the intent of the employee, the nature, time and place of the employee’s conduct, the work the employee was hired to do, the incidental acts the employer should reasonably have expected the employee to do, the amount of freedom allowed the employee in performing his duties, and the amount of time consumed in the personal activity.”3Justia. O’Connor v McDonald’s Restaurants (1990) That case also stands for a useful principle: when an employee is pursuing a business errand and a personal objective at the same time, the employee is still acting within the scope of employment.
These questions are fact-heavy, and judges frequently send them to juries rather than deciding them on summary judgment.
When a Frolic Ends and Liability Returns
The re-entry doctrine says that once an employee finishes a personal errand and resumes the employer’s business, vicarious liability kicks back in, even if the employee was on a clear frolic moments earlier.
Riley v. Standard Oil Co., a 1921 New York case, is the standard illustration. An employee was sent to pick up barrels of paint from a railroad yard. After loading the paint, he drove several blocks in the opposite direction to drop off some wood at his sister’s house. He then turned around and headed back toward the factory. Before reaching the railroad yard, he hit a pedestrian. The court held the employer liable. By the time of the accident, the employee had finished his personal errand, was driving the employer’s truck loaded with the employer’s goods, and had no personal objective left. He had re-entered the scope of employment.4CaseMine. Riley v Standard Oil Co
The re-entry question matters for injured third parties. If the employee is still on a frolic when the accident happens, the victim may have no claim against the employer and is limited to recovering from the employee personally. If the employee has re-entered the scope of employment, the employer’s insurance and assets become available. Courts look at whether the employee had genuinely resumed the employer’s business or was merely traveling in the employer’s general direction while still pursuing personal goals.
What It Means for the Employer
Under respondeat superior, an employer is vicariously liable for harm caused by employees acting within the scope of employment. This applies even when the employer did nothing wrong and had no knowledge of the specific act. The rationale is that employers benefit from their employees’ work and are in the best position to absorb and spread the costs of injuries that work creates.5Legal Information Institute. Respondeat Superior
On a detour, the employer stays liable. The deviation is minor enough that the employee is still generally about the employer’s business. A coffee stop, a brief personal phone call, or a slightly altered route does not sever the employment relationship for liability purposes.
On a frolic, the employer is generally off the hook. But proving a frolic can be harder than employers expect. Courts are skeptical of bright-line claims, and the burden typically falls on the employer to show that the deviation was substantial and entirely unrelated to work.1Legal Information Institute. Frolic and Detour
One boundary worth flagging. Respondeat superior applies only to employees, not independent contractors. If the person who caused harm is an independent contractor, the frolic-and-detour analysis is usually beside the point because the hiring party is not vicariously liable in the first place. The key distinction is whether the hiring party controls how the work gets done, not just what work gets done.
What It Means for the Employee
Employees are always personally liable for their own negligence, on a detour or on a frolic. The distinction does not protect the employee from being sued. It determines whether the employer shares that liability.
During a detour, both employer and employee can be named as defendants. The injured party often goes after the employer because employers tend to carry insurance, but the employee remains on the hook too. During a frolic, the employee stands alone, bearing the full financial weight of any judgment or settlement.
The distinction also affects workers’ compensation. An injury during a detour generally qualifies as work-related and is covered. An injury during a frolic may be denied because the employee had stepped outside the course of employment, leaving the employee without the medical coverage and wage replacement that workers’ comp provides.
A frolic can also end the job. Abandoning work duties for personal reasons may violate company policy and constitute grounds for termination. Even where no one gets hurt, unauthorized use of company vehicles, equipment, or paid time creates a trust problem that employers take seriously.
The Commute Is a Separate Rule
Frolic-and-detour analysis assumes the employee was on the clock and then wandered. The commute is governed by a different rule. Under the “coming and going” rule, employees are generally not within the scope of employment while traveling to or from work, so the employer typically is not liable for accidents on that trip.
Exceptions exist. Employees who travel between job sites during the day, run work errands on the way home, or drive company vehicles as part of their duties may remain within the scope of employment while traveling. The two rules interact at the edges: an employee who finishes work and starts a personal trip is governed by the coming and going rule, while an employee who leaves mid-shift for a personal errand falls into frolic-and-detour territory.