When a new client sits across from me after losing a job they believe they were unlawfully denied or fired from, the conversation almost always turns to money — specifically, what they can recover in back pay and front pay. What many clients don’t expect to hear, at least not at first, is that the size of that recovery depends in part on what they do after the termination, not just on what their employer did to them. That’s the doctrine of mitigation of damages, and as a plaintiff’s employment attorney, I consider it one of the most important — and most misunderstood — concepts in this area of law.
At its core, mitigation of damages means that an employee who has been unlawfully terminated has a duty to use reasonable diligence to find other, substantially equivalent employment. The idea traces back to basic principles of damages law: a plaintiff cannot simply sit on the sidelines and let losses accumulate when reasonable steps could reduce them. The Supreme Court articulated the standard for Title VII cases in Ford Motor Co. v. EEOC (1982), holding that a claimant satisfies the duty to mitigate by using reasonable diligence in seeking employment substantially equivalent to the position lost. The same principle applies broadly across wrongful termination, discrimination, and retaliation claims, whether brought under Title VII, the ADEA, the FMLA, or state law.
Here’s what often gets lost in translation, though: mitigation is an affirmative defense, and the burden of proving it belongs to the employer, not the employee. To reduce a back pay award, the defendant must show both that comparable jobs were actually available and that the plaintiff failed to make reasonable efforts to pursue them. Courts, including the Fifth Circuit, have consistently placed that burden squarely on the employer’s shoulders. That distinction matters enormously in practice. It means a client doesn’t have to prove they searched perfectly — they just have to show they acted reasonably, and the employer has the much harder job of proving otherwise.
It’s also worth clarifying what “substantially equivalent employment” actually requires, because clients sometimes worry they were obligated to take the first job offered, no matter how far it fell from their prior role. That’s not the standard. The replacement position must be comparable in status, responsibility, compensation, and working conditions. By way of example, a terminated operations manager isn’t required to take a warehouse floor job to satisfy the mitigation duty, and a claimant who turns down a genuinely inferior position hasn’t failed to mitigate.
So what does this mean practically, from where I sit? It means that from the very first client meeting, I’m talking about documentation. I tell clients to keep a running log of every job application, every recruiter contact, every LinkedIn message, every networking event — dates, positions, companies, and outcomes. Save the rejection emails. Save the job postings you applied to. If you take a lower-paying job in the interim, keep those pay records too, because interim earnings offset — but don’t eliminate — the back pay calculation. This isn’t busywork. It’s the evidentiary record that will make it very difficult for a defense attorney to argue my client sat idle.
Mitigation of damages isn’t a loophole for employers to escape accountability, and it shouldn’t be treated as one. It’s a doctrine that, properly understood and properly documented, actually protects good-faith plaintiffs while preserving the basic fairness principle that damages should reflect real, provable loss. For plaintiffs and their attorneys, the lesson is simple: start the job search early, document everything, and let the employer carry the burden the law assigns to them.





