The 'But-For' Causation Standard in NJ Retaliation Claims: What You Have to Prove

Retaliation claims under New Jersey employment law focus on the reason behind the employer’s decision. The “but-for” causation standard requires an employee to show that the adverse action would not have happened without the protected activity. This connection can involve actions such as discipline, demotion, termination, or other negative treatment after an employee exercises a legal right. 

Employers often point to reasons unrelated to an employee’s protected activity. At Brandon J. Broderick, our attorneys examine the full record, including the employer’s explanations, the timing of events, and any evidence showing a different reason behind the decision. A termination after a complaint, investigation, wage claim, or other protected activity requires a closer look at the facts rather than relying on timing alone. 

This article explains the but-for causation standard, what evidence supports a case, how courts evaluate employer explanations, and when to consult a whistleblower lawyer in New Jersey. 

Understanding the But-For Causation Standard in NJ Retaliation Cases 

A worker proves retaliation only by showing the adverse action would not have happened without the underlying motive. But-for causation comes from the U.S. Supreme Court's 2013 decision in University of Texas Southwestern Medical Center v. Nassar. 

A physician complained about harassment by a supervisor, and a job offer at an affiliated hospital was later withdrawn. A jury found for him under the broader "motivating factor" test, which requires proof only that retaliation was one of several reasons behind the decision. 

The Supreme Court’s decision made the standard stricter for Title VII retaliation claims. Nassar built on Gross v. FBL Financial Services. It already applied the same but-for reading to age discrimination claims under the ADEA.

The standards don’t overlap:

• But-for causation doesn’t mean sole causation. Retaliation counts as a but-for cause when it tipped the decision, even if other factors also existed. A worker with a mediocre performance record still wins by showing the employer tolerated the record until a complaint arrived.
• Motivating-factor claims survive on weaker proof. Retaliation only needs to be one reason in the decision, not the decisive one, so the difference between the two tests decides real cases.

Where the distinction matters most is summary judgment, the stage where courts dismiss claims before trial. A stricter causal test gives employers more room to argue that the outcome would have been identical regardless of the complaint. This can end the case before a jury hears it. Stakes like these reach a large pool of workers. 

Workers filed 88,531 discrimination charges with the EEOC in fiscal year 2024. Retaliation remained the leading category, with 42,301 charges. A whistleblower attorney in New Jersey can help evaluate the evidence needed to show the connection between protected activity and an employer’s decision. 

Proving Retaliation in NJ: How the But-For Causation Standard Applies 

But-for causation governs federal retaliation claims. New Jersey workers carry it whenever a case proceeds under a federal statute. It applies to claims under Title VII, which covers complaints about race, sex, religion, color, and national origin discrimination. After Gross, it also applies to age retaliation claims under the ADEA. 

The federal standard applies to New Jersey workers the same way. Someone can report bias to human resources, file a charge with the EEOC, and later sue under Title VII after receiving a right-to-sue letter. Once the case proceeds under federal law, the worker must show that the demotion or firing would not have happened without the complaint. Geography doesn’t change the rules. A worker in Newark suing under Title VII faces the same causation burden as a worker in Texas.

Federal claims also come with their own filing rules and limits. This includes:

• Title VII requires a charge with the EEOC before any lawsuit. New Jersey workers have 300 days from the retaliatory act to file it, a longer window than the default 180 days. The state operates its own civil rights agency enforcing parallel law. Many discrimination charges are handled through dual filing with EEOC and NJDCR. 
• Damages under Title VII face statutory caps tied to employer size, while New Jersey's state statutes impose no comparable ceiling on compensatory awards.
• Federal court juries receive but-for instructions in most cases, so the same facts support different verdicts depending on which claim reaches them.

Most New Jersey retaliation lawsuits plead federal and state claims together. A single case then carries two causation standards at once. Many of the cases we handle at Brandon J. Broderick involve this split, with a Title VII count judged under but-for causation and a state-law count judged under a more forgiving test. 

Which claims go into the complaint matters. Identical evidence can apply in one case and doesn’t qualify for the other. A worker who loses the federal count at summary judgment still proceeds to trial on the state count. The pairing preserves options rather than doubling the risk.

New Jersey Employment Law Rejects Nassar’s Strict Retaliation Causation Standard 

New Jersey never adopted Nassar for its own laws. Two state statutes protect workers from retaliation. The Conscientious Employee Protection Act, or CEPA, covers whistleblowers, and the Law Against Discrimination, or LAD, covers workers who report bias. 

Both use a "determinative factor" test instead of but-for causation. A worker meets it by showing retaliation was more likely than not a determinative factor in the decision. 

The complaint had to make a difference in the outcome, not be the only reason behind it. New Jersey's official jury instructions confirm this, and both charges point back to Kolb v. Burns, a 1999 Appellate Division decision holding that a worker doesn’t have to prove the sole factor.

The two standards are split. On June 24, 2013, the U.S. Supreme Court decided Nassar and raised the federal bar. Later, the New Jersey Supreme Court decided Battaglia v. United Parcel Service and moved in the opposite direction. 

In Battaglia, a UPS manager complained about a supervisor's derogatory comments toward women. No woman heard the remarks, and the company argued there was no real victim, so the complaint deserved no protection. The court disagreed. A worker who complains in good faith about conduct he reasonably believes is discriminatory is protected, even if no specific victim is ever identified. New Jersey courts read both statutes broadly on purpose. CEPA in particular ranks among the strongest whistleblower laws in the country.

State law favors workers on several fronts:

• Causation is easier to prove. A determinative factor showing beats a but-for showing on the same evidence, since the worker never has to disprove every alternative explanation for the decision.
• Protected activity reaches further. CEPA covers disclosures, objections, and refusals to participate in conduct a worker reasonably believes is illegal, fraudulent, or against public policy, and the belief only has to be reasonable, not correct.
• Deadlines differ sharply. CEPA gives one year from the retaliatory act to file suit, while LAD claims carry a two-year limit, and neither requires an agency to charge first.

The differences shape many of the whistleblower cases our legal team handles. New Jersey protections offer a lower causation hurdle, broader coverage, and uncapped compensatory damages. 

Building a Retaliation Claim Under New Jersey Law

Regardless of the causation standard, retaliation claims start with the same basic elements. Under CEPA, a worker must show:

• A reasonable belief that the employer violated the law or a clear mandate of public policy
• Protected whistleblowing activity under the statute
• An adverse employment action, such as termination, demotion, suspension, or another form of workplace retaliation
• A connection between the whistleblowing activity and the employer’s response

The New Jersey Supreme Court outlined these elements in Dzwonar v. McDevitt in 2003. LAD retaliation claims use a similar approach, with the protected activity involving complaints about discrimination instead of whistleblowing. 

Causation is where most claims are won or lost. Direct proof rarely exists. Employers don’t announce an intent to punish a complaint. Courts rely on circumstantial evidence instead. This includes changes in treatment, negative performance reviews, shifting explanations, and the timing between the protected activity and the adverse action. 

Courts recognize that timing alone does not prove causation. A worker fired without warning after a complaint points to retaliation. Judges still examine other facts showing what motivated the decision. 

Strong evidence includes:

• A documented record showing the complaint came first, and the discipline followed, built from emails, texts, HR reports, and personnel files.
• A sudden shift in treatment after the complaint, such as new write-ups for conduct the employer previously ignored, exclusion from meetings, or a surprise negative review after years of strong ones.
• Comments from decision-makers suggesting hostility toward the complaint, including remarks about loyalty or troublemaking.
• Departures from the employer's own disciplinary procedures, or an investigation aimed at the complaining worker rather than the reported conduct.

The evidence collected at the beginning of a claim will shape the outcome. Emails, messages, performance records, and other documents can help show what happened before and after the protected activity and explain why the employer made its decision. 

A strong record can make the difference between a claim ending at summary judgment and one moving forward. Contact us today to speak about your situation.