Food tampering is the deliberate act of putting a poison or other harmful substance into food or drink, and in California it is a felony under Penal Code section 347. Your civil claim is separate from the prosecution, and it takes a different shape depending on what happened: someone adulterated your food on purpose, bacteria made you sick, or you bit down on something that should never have been in a meal. Those patterns have different defendants, theories, and proof problems.
B&D Law Group, APLC represents people injured by dangerous and contaminated products in California and in Las Vegas, Nevada. Readers use the phrase food tampering for all three, and that blurring costs claims: the evidence you must preserve in the first forty-eight hours differs in each.
What Counts as Food Tampering Under California Law
Penal Code section 347(a)(1) makes it a felony to willfully mingle any poison or harmful substance with any food, drink, medicine, or pharmaceutical product, or in any spring, well, reservoir, or public water supply, where the person knows or should have known it would be taken by a human being to their injury. The sentence is two, four, or five years in state prison. Section 347(a)(2) adds three years where the substance may cause death if ingested or causes great bodily injury, and section 347(c) lets the court fine the maximum for each item tampered with.
Federally, 18 U.S.C. section 1365 covers tampering with a consumer product affecting interstate commerce with reckless disregard for the risk of death or bodily injury, reaching twenty years where serious bodily injury results and life where death results. It defines consumer product to include food, and it fits shelf goods more readily than a plated meal.
California also regulates the food itself. Under the Sherman Food, Drug, and Cosmetic Law, food is adulterated if it contains a poisonous or deleterious substance that may render it injurious to health (Health and Safety Code section 110545), consists in whole or part of a diseased, contaminated, filthy, putrid, or decomposed substance (section 110560), or was held under insanitary conditions whereby it may have become contaminated (section 110565). Section 110620 makes selling adulterated food unlawful, and restaurants are governed by the California Retail Food Code, section 113700 and following.
When an Employee Tampers With Your Food, Is the Restaurant Liable?
The employee rarely has anything to pay a judgment with; the restaurant does. There are two roads to the employer. The first is respondeat superior, which makes an employer answer for torts within the scope of employment, and California law on whether an intentional act falls inside that scope is genuinely nuanced. In Lisa M. v. Henry Mayo Newhall Memorial Hospital (1995) 12 Cal.4th 291, the Supreme Court held a hospital was not vicariously liable for an ultrasound technician’s sexual assault on a patient. It required a causal nexus between the misconduct and the work beyond the job merely putting two people together: the tort must be engendered by or an outgrowth of the employment, and the test asks whether the conduct is so unusual or startling that charging the loss to the enterprise would be unfair.
Applied to food, that cuts both ways. An employee who adulterates a meal over a personal grudge may fall outside the scope; one who does it during a dispute arising out of serving that customer is a harder case for the employer. We are not aware of a California decision squarely resolving food adulteration under this test, so treat it as unsettled and have a lawyer look at the facts.
The second road rests on the employer’s own negligence and does not depend on scope of employment. In Doe v. Capital Cities (1996) 50 Cal.App.4th 1038, 1054, the Court of Appeal recognized that an employer can be liable to a third person for negligently hiring, supervising, or retaining an unfit employee, where it knew or should have known that hiring created a particular risk and that harm then materialized, though it found the complaint before it did not allege that knowledge. Prior complaints about the worker and ignored warnings from staff prove it, and those records sit in the employer’s own files.
Foodborne Illness: Strict Liability and the Causation Problem
Salmonella, listeria, E. coli, and norovirus cases are not tampering cases. Nobody intended anything, so they run on product liability. California pioneered strict liability in Greenman v. Yuba Power Products (1963), and food sold to the public is a product: manufacturer, distributor, retailer, and the restaurant can each sit in the chain of distribution. You need not prove carelessness, only that the food was defective and caused your injury.
Causation is where these claims are won and lost. According to the Centers for Disease Control and Prevention’s food safety data, 48 million people in the United States get sick from a foodborne illness each year, 128,000 are hospitalized, and 3,000 die. Few can prove which meal did it. Incubation periods run from hours to weeks depending on the organism, so the last thing you ate is often not what made you ill.
Three pieces of evidence do most of the work, and two vanish within days. Keep the receipt or delivery order, which fixes what you ate and where. Keep the leftovers and packaging, sealed and refrigerated. Then ask a physician for a stool culture: an identified organism turns suspicion into a claim and lets a public health laboratory match your sample to others. Without a named pathogen you argue from timing alone, which rarely carries the burden.
Foreign Objects in Food: Mexicali Rose and Consumer Expectation
The controlling authority is Mexicali Rose v. Superior Court (1992) 1 Cal.4th 617, where a patron swallowed a one-inch chicken bone in a chicken enchilada and injured his throat. The line drawn there decides which theories you may plead.
If the injury-producing substance is natural to the preparation of the food served, the court held, it was reasonably expected by its very nature and the food cannot be found unfit or defective, so the plaintiff has no cause of action in strict liability or implied warranty. What survives is negligence: if the natural substance is there because the restaurant failed to exercise due care in preparation, the patron may sue on that theory. If the substance is foreign to the food, the patron may also plead implied warranty and strict liability, and the trier of fact decides whether it could reasonably have been expected by the average consumer and whether it rendered the food unfit or defective.
In practice, glass, metal, a screw, or plastic is foreign and the full range of theories opens up; a bone in a bone-in cut, a fruit pit, or a shell fragment is natural, and the case must rest on careless preparation. Either way the object is your strongest evidence, so photograph it in the dish and keep it. The same instinct runs through California product law: Barker v. Lull Engineering (1978) 20 Cal.3d 413 holds a design defective if the product failed to perform as safely as an ordinary consumer would expect.
Report It to the Health Department, and Watch the Clock
The California Department of Public Health directs consumers with complaints about food served or sold at retail food facilities to their local environmental health department, which CDPH describes as responsible for the initial investigation; complaints about packaged processed food go to CDPH’s Food and Drug Branch instead. Make the report. For most claimants it produces evidence they could never obtain themselves, and it costs nothing. An inspector can enter the kitchen, pull temperature logs, interview staff, and take samples. You cannot.
Then the deadlines. Code of Civil Procedure section 335.1 allows two years from the injury for most California personal injury suits, and section 352(a) tolls that period during minority, so a child’s two years generally begins at eighteen. If the food came from a public entity, such as a school or a university dining hall, Government Code section 911.2 requires a written claim within six months. The practical clock is shorter still: video overwrites in weeks, leftovers spoil in days.
Frequently Asked Questions
Is food tampering a felony in California?
Yes. Penal Code section 347(a)(1) makes willfully mingling a poison or harmful substance with food, drink, medicine, or a pharmaceutical product a felony punishable by two, four, or five years in state prison, and section 347(a)(2) adds three years where the substance may cause death if ingested or causes great bodily injury.
A prosecution is not compensation. That case belongs to the state, and your civil claim runs on its own deadline.
Can I sue a restaurant if an employee spit in my food?
Possibly, on either of two theories, and neither is automatic. Respondeat superior requires that the intentional act fall within the scope of employment, and under Lisa M. v. Henry Mayo Newhall Memorial Hospital (1995) 12 Cal.4th 291 that demands a causal connection to the work, not just the job supplying an opportunity.
Negligent hiring, supervision, or retention is often stronger, because it targets the employer’s own carelessness. Doe v. Capital Cities (1996) 50 Cal.App.4th 1038 recognizes it where the employer knew or should have known the employee posed a risk.
How do I prove a specific restaurant gave me food poisoning?
Three things: proof of what you ate and where, the food itself, and a laboratory result naming the organism. Keep the receipt, refrigerate any leftovers in a sealed container, and ask a physician for a stool culture.
Report it to your local environmental health department too. If other diners complained about the same facility, or a laboratory matches your sample to an outbreak strain, causation stops being guesswork.
Can I sue for a bone in my food in California?
Sometimes, but not in strict liability. Under Mexicali Rose v. Superior Court (1992) 1 Cal.4th 617, a substance natural to the preparation of the food is reasonably expected by its very nature, so the food cannot be found unfit or defective and no strict liability or implied warranty claim lies.
Negligence remains available if the bone was there because the kitchen failed to exercise due care. A foreign object such as glass or metal is treated differently, and the jury decides whether an average consumer could reasonably expect it.
How long do I have to file a food poisoning claim in California?
Two years from the injury under Code of Civil Procedure section 335.1, and section 352(a) tolls that period during minority, so a minor’s clock generally starts at eighteen.
If the food came from a public entity, Government Code section 911.2 requires a written claim within six months, and missing it can end the case before it starts.
If tampered or contaminated food injured you or your child, we can tell you which theory fits. Our team handles product liability claims and premises liability claims across California; see also our personal injury practice page. Call (888) 977-2238 or use our contact page, and bring the receipt and packaging.
This article is provided for general informational purposes only and does not constitute legal advice. Reading it does not create an attorney-client relationship. Every case is different and past results do not guarantee a similar outcome. If you have been injured, speak with a licensed attorney about your specific situation.