What Can Employers Sue Employees For? (w/Examples) + FAQs

Employers can sue employees for breaking contracts, stealing trade secrets, violating fiduciary duties, misusing company computers, committing fraud, damaging property, defaming the business, or interfering with clients and coworkers. The main legal backbone comes from federal statutes like the Defend Trade Secrets Act and the Computer Fraud and Abuse Act, state adoptions of the Uniform Trade Secrets Act, and common-law doctrines like breach of contract and breach of the duty of loyalty. When an employee breaks one of these rules, the consequence is a civil lawsuit that can include injunctions, money damages, attorney fees, and sometimes criminal referral.

According to the 2024 Seyfarth Trade Secrets Report, trade secret filings in federal court have more than doubled since the DTSA passed in 2016, and the U.S. Chamber of Commerce estimates that employee-caused losses from fraud, theft, and data misuse cost U.S. businesses over $50 billion each year. That number is why employers are faster to sue than ever.

Here is what this guide will teach you:

• ⚖️ The exact causes of action employers use, from breach of contract to CFAA claims
• 🔐 How trade secret and non-compete lawsuits really play out under federal and state law
• 💼 The duty of loyalty and fiduciary duty rules every employee must follow
• 💰 Real damages, injunctions, and clawback orders courts have issued
• 🧭 Mistakes, do’s and don’ts, and named examples that show how to stay out of court

The Legal Framework Behind Employer Lawsuits

Employers do not sue employees on a whim. Every lawsuit rests on a legal theory known as a cause of action. A cause of action is the specific rule, statute, or duty the employee allegedly broke. Without one, a court will throw the case out under Federal Rule of Civil Procedure 12(b)(6).

The plain-English explanation is simple. Federal law, state law, and the employment contract itself all create duties. When an employee breaks one of those duties and the employer loses money, reputation, or property, the employer has the right to file a civil complaint. The consequence of ignoring these duties is real, because federal courts saw over 1,400 trade secret filings in 2023 alone, per the Lex Machina employment litigation report.

A real-world example shows the stakes. In Waymo LLC v. Uber Technologies, Google’s self-driving unit sued a former engineer for taking 14,000 files. Uber settled for $245 million in equity. A common misconception is that only high-level executives face these suits. In reality, entry-level coders, nurses, sales reps, and even interns have been named as defendants.

Federal Statutes Employers Rely On

Federal law gives employers powerful tools. The Defend Trade Secrets Act of 2016 lets employers sue in federal court for stolen trade secrets. The consequence of a DTSA violation can include double damages and attorney fees under 18 U.S.C. §1836. A real-world example is E.I. duPont de Nemours v. Kolon Industries, where DuPont won a $919 million jury verdict against a competitor that hired away Kevlar engineers.

The Computer Fraud and Abuse Act is the second major federal tool. It punishes employees who exceed authorized access to company systems. The Supreme Court’s 2021 ruling in Van Buren v. United States narrowed the law, but employees who access systems after being fired or download files they have no business touching still face civil CFAA claims. A common misconception is that the CFAA only reaches hackers. It also reaches insiders who log in for improper reasons.

State Law and Common Law Claims

States fill in the rest of the map. Most states have adopted the Uniform Trade Secrets Act, which mirrors the DTSA. New York is the outlier and uses common law for trade secret claims. The consequence of this patchwork is that the same behavior can be litigated under two or three theories at once.

Common law adds breach of contract, breach of fiduciary duty, conversion, fraud, defamation, and tortious interference. A mini-scenario helps. Priya, a regional sales director, leaves for a competitor and takes her client list. Her employer sues under the DTSA, a state UTSA claim, breach of her non-solicit agreement, and breach of the duty of loyalty. A common misconception is that one lawsuit means one claim. Employers almost always plead several.

Breach of Employment Contract

Breach of contract is the most common lawsuit employers file against former or current employees. A contract is a promise enforced by law. When an employee signs an offer letter, non-compete, non-solicit, non-disclosure, or repayment agreement, that signature creates binding duties under state contract law, summarized in the Restatement (Second) of Contracts.

The plain-English explanation is that a contract has four parts: offer, acceptance, consideration, and mutual intent. If the employer can show the contract existed, the employee broke it, and the breach caused damages, the employer wins. The consequence can be compensatory damages, liquidated damages written into the contract, injunctions, and attorney fees. The American Bar Association’s 2023 contract litigation survey shows breach of contract is the top-filed civil claim in state courts.

A named example makes it concrete. Marcus, a software engineer at a Boston startup, signed a contract promising to repay a $30,000 signing bonus if he left within two years. He quit after 11 months. The company sued in Suffolk Superior Court and won the full amount plus interest. A common misconception is that unsigned or verbal offers cannot be enforced. Many states enforce oral employment contracts, though the statute of frauds blocks any promise that cannot be performed within one year.

Non-Compete Agreements

Non-compete lawsuits are the most litigated contract claim. A non-compete bars an employee from joining a competitor for a set time in a set geography. The FTC’s 2024 non-compete rule tried to ban most non-competes nationwide, but the Northern District of Texas blocked the rule in Ryan LLC v. FTC in August 2024. The FTC’s appeal to the Fifth Circuit remains pending, so state law still controls.

California voids most non-competes under Business & Professions Code §16600. Texas allows them if they are reasonable under Texas Business & Commerce Code §15.50. New York courts apply a three-factor test from BDO Seidman v. Hirshberg. A common misconception is that a non-compete is always enforceable just because it is signed. Courts routinely blue-pencil or void overbroad clauses.

Non-Solicitation and Non-Disclosure Agreements

Non-solicits protect customers and coworkers. Non-disclosure agreements protect information. Both are easier to enforce than non-competes because they do not block a person from working. The consequence of breaking either is typically an injunction plus damages for lost profits.

A named example helps. Danielle, a wealth advisor in Charlotte, signed a two-year client non-solicit. She emailed her top 40 clients the day she resigned. Her former firm sued under BB&T v. Wright style theories and won a temporary restraining order within 72 hours. A common misconception is that LinkedIn announcements are safe. Courts in Illinois, Ohio, and Minnesota have treated targeted LinkedIn posts as solicitation.

Trade Secret Misappropriation

Trade secret theft is the fastest-growing category of employer lawsuits. A trade secret is any information that gives the business a competitive edge and is kept secret. Customer lists, pricing models, source code, chemical formulas, and manufacturing processes all qualify under 18 U.S.C. §1839(3).

The plain-English explanation is that an employee breaks the law when they take, copy, email, photograph, or memorize trade secrets for a competitor or personal use. The consequence under the DTSA can include actual damages, unjust enrichment, reasonable royalty, exemplary damages up to double, attorney fees, and even ex parte seizure of the property. A 2023 IP Watchdog study found that median trade secret awards in federal court exceed $4 million.

A named example drives the point home. Anthony Levandowski, a former Google engineer, downloaded 14,000 files before joining Uber. The civil case led to a $179 million arbitration award and a federal criminal conviction detailed in the DOJ press release. A common misconception is that public information on a customer’s website cannot be a trade secret. Courts protect compilations of public data if the employer invested time to organize them.

Elements of a DTSA Claim

To win a DTSA case, the employer must prove three things. First, the information is a trade secret. Second, the employer took reasonable steps to keep it secret. Third, the employee misappropriated it. The Sedona Conference Commentary on Protecting Trade Secrets is the leading practitioner guide.

Reasonable steps include password protection, NDA coverage, document labeling, and restricted access. The consequence of skipping those steps is dismissal. In Abrasic 90 Inc. v. Weldcote Metals, a federal judge refused a preliminary injunction because the employer failed to label files confidential. A common misconception is that trade secrets last forever. Protection ends the moment the secret becomes public.

Inevitable Disclosure Doctrine

Some states let employers sue even without proof of theft, under the inevitable disclosure doctrine established in PepsiCo v. Redmond. The theory is that an employee cannot help but use trade secrets in the new job. Illinois, Indiana, Missouri, Pennsylvania, and Utah recognize the doctrine. California rejects it flatly under Schlage Lock Co. v. Whyte.

A named example clarifies it. Jun, a flavor chemist at a Chicago food company, accepts a near-identical job at a rival. The former employer can seek an injunction in Illinois courts even if Jun has not yet disclosed anything. A common misconception is that inevitable disclosure applies nationwide. It does not, and choice-of-law clauses become critical.

Breach of Fiduciary Duty and Duty of Loyalty

Every employee owes the employer a duty of loyalty while employed. Officers, directors, and partners owe a higher fiduciary duty. These duties come from common law, not any statute, and are summarized in the Restatement (Third) of Agency §8.01.

The plain-English explanation is that you cannot compete with your employer, take its opportunities, or line your own pockets while still on the payroll. The consequence can include disgorgement of every dollar earned during the disloyal period, plus punitive damages. In Food Lion v. Capital Cities/ABC, the Fourth Circuit upheld damages against employees who took a second job secretly.

A named example shows the line. Rebecca, a VP of sales, spends work hours launching her own competing firm. Her employer sues for breach of fiduciary duty and wins back every bonus paid during the plotting period. A common misconception is that planning to compete is illegal. It is not, but soliciting clients or coworkers before quitting crosses the line.

Corporate Opportunity Doctrine

The corporate opportunity doctrine bars executives from taking business chances that belong to the company. Delaware courts apply the test from Broz v. Cellular Info. Sys.. The consequence of violating it is a constructive trust over the executive’s profits.

A common misconception is that small side gigs are safe. If the side gig is in the same line of business, courts often rule that the opportunity belonged to the employer. The Delaware Chancery Court issues the most influential rulings on this topic.

Computer Fraud, Data Theft, and Digital Misuse

The Computer Fraud and Abuse Act lets employers sue employees who misuse company systems. 18 U.S.C. §1030(g) gives a civil right of action when losses exceed $5,000 in any 12-month period. Losses include investigation cost, response cost, and revenue lost from downtime.

The plain-English explanation is that an employee who downloads files after being fired, installs unauthorized software, plants malware, or transfers data to personal cloud storage has likely broken the CFAA. The consequence is both civil liability and potential criminal charges referred by the FBI Cyber Division. A real-world example is United States v. Nosal, where a former executive was convicted for using current employees’ credentials.

A named example makes the rule tangible. Kevin, an IT admin, copies the customer database to a personal Dropbox the week he gives notice. His employer sues under the CFAA, state computer crime laws, and the DTSA. A common misconception is that using your own login means no CFAA violation. After Van Buren, the key question is whether the employee accessed files or folders they had no right to reach.

State Computer Crime Statutes

Every state has its own computer crime statute. California’s Comprehensive Computer Data Access and Fraud Act is among the broadest. Texas uses the Harmful Access by Computer Act. New York relies on Penal Law Article 156.

The consequence is that an employer can stack state and federal claims, forcing the employee to defend on multiple fronts. A common misconception is that deleted files cannot support a claim. Forensic recovery routinely surfaces files, and spoliation sanctions can be worse than the original theft.

Fraud, Embezzlement, and Conversion

Fraud is a knowing lie that causes harm. Embezzlement is the theft of money the employee was trusted to handle. Conversion is the civil version of theft for any type of property. The Association of Certified Fraud Examiners 2024 Report to the Nations estimates the typical employee fraud scheme causes a $145,000 loss and lasts 12 months before discovery.

The plain-English explanation is that any employee who lies on expense reports, inflates hours, steals inventory, kicks back vendor payments, or diverts customer checks faces a civil fraud or conversion suit. The consequence can include compensatory damages, punitive damages, restitution, and criminal referral. A real-world example is SEC v. Rita Crundwell, the Dixon, Illinois comptroller who embezzled $53 million over two decades.

A named example helps. Samir, a bookkeeper, writes 42 checks to a shell LLC he controls. His employer sues for fraud, conversion, and breach of fiduciary duty, and refers him to the local district attorney. A common misconception is that civil and criminal cases cannot run at the same time. They can, and the civil case often moves faster because the burden of proof is lower.

Defamation, Tortious Interference, and Unfair Competition

Employees can also be sued for harming the employer’s reputation or business relationships. Defamation requires a false statement of fact, published to a third party, causing harm. Restatement (Second) of Torts §558 lays out the rule.

The plain-English explanation is that an employee who posts false Glassdoor reviews, tells customers the company is going bankrupt, or spreads lies to the press can be sued. The consequence is damages for lost business and, in some states, punitive damages. A real-world example is Restis v. American Coalition Against Nuclear Iran, a major defamation precedent.

Tortious interference applies when the employee wrecks the employer’s contracts or prospective business. A named example is Priscilla, who tells her employer’s top five customers to cancel their contracts before she launches a rival. Her employer sues for tortious interference with contract and with business expectancy. A common misconception is that truthful statements can support defamation. Truth is a complete defense, though tortious interference can still apply.

Three Common Lawsuit Scenarios

Courts see the same fact patterns over and over. The table below shows the three most common.

Three More Real-World Examples

Damages, Injunctions, and Other Remedies

When an employer wins, the court can award several remedies. Compensatory damages cover actual losses. Consequential damages cover downstream harm. Liquidated damages are preset numbers in the contract. Punitive damages punish bad behavior, and are capped in many states under BMW of North America v. Gore.

The plain-English explanation is that an injunction is often more valuable than money. A temporary restraining order can stop an employee from working for a rival within 24 hours. The consequence of violating an injunction is contempt of court, which can include jail time. The U.S. Courts injunction guide explains the timeline.

A named example helps. Tariq, a hedge-fund quant, joined a rival with non-public trading strategies. His former employer obtained a federal TRO the next Monday, barring Tariq from trading for 12 months. A common misconception is that the losing employee’s employer insurance pays. Most directors and officers policies exclude fraud, willful conduct, and trade secret theft.

Attorney Fee Shifting

The American Rule says each side pays its own lawyers, but many employment contracts flip that rule with a fee-shifting clause. The DTSA also shifts fees when misappropriation is willful under 18 U.S.C. §1836(b)(3)(D). The consequence is that losing employees can owe six-figure legal bills on top of damages.

A common misconception is that fee shifting works both ways. It does in most contracts, so a winning employee can also recover fees. Always read the clause before signing.

Clawbacks of Bonuses, Training, and Sign-On Pay

Employers increasingly sue to claw back money already paid. Signing bonuses, training costs, tuition reimbursement, and retention bonuses often come with repayment clauses. The Consumer Financial Protection Bureau’s 2022 report on TRAPs flagged some as deceptive, but most courts still enforce them.

A named example shows the stakes. Leila, a nurse, signed a $15,000 training reimbursement agreement. She left after 14 months. Her hospital sued and won under the contract. The consequence for many healthcare workers is that a short-tenure resignation becomes a lawsuit. A common misconception is that unpaid wages can offset a clawback. The Fair Labor Standards Act limits offsets that push pay below minimum wage.

Mistakes to Avoid as an Employee

Every lawsuit starts with a preventable error. Here are the biggest ones to dodge.

• Forwarding work emails to a personal Gmail, which creates CFAA and DTSA exposure even if the files are later deleted
• Saving customer lists to a personal device, because courts treat the copy itself as misappropriation
• Soliciting coworkers while still employed, which breaches the duty of loyalty in almost every state
• Signing a non-compete without reading the geographic scope, leading to accidental violations in new jobs
• Posting anything false about the employer online, which can trigger defamation and tortious interference claims
• Ignoring a cease-and-desist letter, because silence speeds up a preliminary injunction hearing
• Destroying evidence after receiving a litigation hold notice, which triggers spoliation sanctions under FRCP 37(e)
• Assuming California law applies when the contract picks another state, because choice-of-law clauses often hold
• Treating an NDA as expired when there is no sunset clause, because many NDAs run forever for trade secrets

Do’s and Don’ts for Employees

Follow these rules and you will almost never see a courtroom.

• Do read every clause of every contract before signing, including the arbitration, non-compete, and clawback sections
• Do keep a clean separation between personal and work devices, because forensic review is standard in these suits
• Do give proper notice and return all property on your last day to avoid conversion claims
• Do consult an employment lawyer before changing jobs, because a $500 consult can save $500,000 in damages
• Do document your new role carefully so you can prove you are not using trade secrets
• Don’t badmouth the employer publicly, because defamation law does not require malice in many states
• Don’t solicit clients or coworkers until every restrictive covenant expires
• Don’t download files just in case you might need them, because that single click is the classic misappropriation fact pattern
• Don’t use company resources to build a side business, because the corporate opportunity doctrine can erase your profits
• Don’t ignore a subpoena or litigation hold, because sanctions can include default judgment

Pros and Cons of Employer Litigation

Lawsuits are a tool, not a cure. Here is how the trade-off looks from the employer’s side.

• Pro: A fast injunction can stop immediate harm and send a deterrent message to other employees
• Pro: Discovery uncovers the full scope of wrongdoing, including other bad actors inside the company
• Pro: Fee-shifting clauses can make the employee pay the legal bill if the employer wins
• Pro: Damages can include disgorgement of every dollar the employee earned during the disloyal period
• Pro: Public filings create a searchable record that deters future job-hoppers in the same industry
• Con: Litigation can cost $500,000 to $5 million through trial, per the Lex Machina employment litigation report
• Con: Discovery cuts both ways, exposing internal company documents to the public
• Con: Employees often lack assets, making any judgment hard to collect
• Con: Filing can chill recruiting because candidates will read about the lawsuit on Google
• Con: Media coverage can hurt the brand more than the underlying theft

Key Entities You Need to Know

Several players appear in every employer-employee lawsuit. The Department of Justice prosecutes criminal trade secret and CFAA cases. The Federal Trade Commission regulates non-competes. The Equal Employment Opportunity Commission handles related discrimination counterclaims. The National Labor Relations Board weighs in when confidentiality clauses chill protected activity.

State-level players matter too. The Delaware Court of Chancery writes most of the fiduciary duty case law. The U.S. District Court for the Northern District of California hears most tech trade secret cases. The American Arbitration Association handles most contract disputes under modern employment agreements. A common misconception is that arbitration is cheap. It can cost more than court because the parties pay the arbitrator’s hourly rate.

The Lawsuit Process Step by Step

Most employer lawsuits follow the same track. First, the employer issues a cease-and-desist letter. Second, it files a complaint and a motion for a temporary restraining order. Third, the court holds an evidentiary hearing within two weeks. Fourth, discovery begins, including forensic imaging of devices. Fifth, the parties attempt mediation. Sixth, the case goes to summary judgment or trial. The U.S. Courts civil case timeline explains each phase.

The plain-English explanation is that the TRO hearing usually decides the case. Whoever wins the TRO usually wins the war because the momentum of an injunction drives settlement. The consequence of losing the TRO is often immediate job loss at the new employer. A common misconception is that cases drag on for years. Trade secret and non-compete cases often settle within 90 days because the injunction forces the issue.

Recent Rulings That Shape the Law

Several recent rulings every employee should know. The Supreme Court’s Van Buren v. United States narrowed CFAA liability but left insider misuse claims intact. The Fifth Circuit is currently deciding the appeal in Ryan LLC v. FTC, which will determine whether the FTC’s non-compete ban ever takes effect. The Third Circuit in Oakwood Labs v. Thanoo clarified the pleading standard for DTSA claims.

Another key case is Waymo v. Uber, which set the modern playbook for trade secret litigation. The Delaware Supreme Court in Cargill v. JWH Special Circumstance tightened fiduciary duty rules for LLC managers. A common misconception is that old cases do not matter. Courts cite 30-year-old precedents every day, so historical rulings still bind current behavior.

FAQs

Can an employer sue an employee for quitting without notice?

No in most states, because employment is usually at-will under common law. An employer can only sue if a written contract required specific notice and quantified damages from the early exit.

Can my employer sue me for taking a job with a competitor?

Yes if you signed an enforceable non-compete or if your new role will involve the use of trade secrets. Enforcement depends on state law, scope, and reasonableness.

Can an employer sue an employee for a mistake at work?

No generally, because ordinary negligence is covered by the employer’s insurance. Employers can sue for gross negligence, willful misconduct, or intentional harm that falls outside normal job duties.

Can an employer sue an employee for defamation over a bad review?

Yes if the review contains false statements of fact that caused real financial harm. Pure opinion and truthful statements are protected under the First Amendment and state law.

Can employers sue employees for stealing customers?

Yes through breach of non-solicit, breach of fiduciary duty, tortious interference, and trade secret claims. Damages often include lost profits and disgorgement of the employee’s new commissions.

Can an employer sue for money already paid in a signing bonus?

Yes when the contract has a clear repayment clause and the employee leaves before the agreed period ends. Courts enforce these clauses under normal contract law in most states.

Can an employer sue an employee for sharing salary information?

No in most cases, because the NLRB protects concerted wage discussions. Confidentiality clauses that bar wage talk are usually unenforceable under federal labor law.

Can an employer sue an employee after they quit?

Yes for actions taken during employment or for post-employment breaches like violating a non-compete, using trade secrets, or soliciting clients. The statute of limitations varies by claim and state.

Can an employer sue an employee for damaging property?

Yes under conversion, negligence, or breach of contract theories when the damage is intentional or grossly negligent. Normal wear-and-tear or ordinary mistakes are usually not actionable.

Can an employer sue an employee for posting on social media?

Yes when the post reveals trade secrets, defames the company, solicits clients, or violates an NDA. Purely personal posts about working conditions are usually protected by labor law.

Can an employer recover attorney fees from a losing employee?

Yes if the contract has a fee-shifting clause or the DTSA’s willful misappropriation provision applies. Otherwise, the American Rule requires each side to pay its own lawyers.

Can an employer sue an employee for moonlighting?

Yes if the second job competes, uses company resources, or violates a written policy. Non-competing second jobs are usually legal unless the employment contract bans them outright.