Anthony Martin v. Susan Duffy, 977 F.3d 294

Background:

In Sept. 2014 Anthony Martin (Perry CI inmate) filed a grievance alleging Sgt. Rogers sexually assaulted him; the next day Captain Susan Duffy placed Martin in administrative segregation and checked a form box noting placement was to "maintain the integrity of an investigation."
Martin remained segregated for about 110 days; he filed requests asserting the placement was retaliatory and later refused to return to the yard, resulting in a disciplinary conviction.
Martin sued Duffy under 42 U.S.C. § 1983 for First Amendment retaliation; the Fourth Circuit earlier held Martin had stated a retaliation claim and that qualified immunity was not warranted, and remanded.
On remand the magistrate and district court found Martin proved a prima facie retaliation claim but applied the Mt. Healthy same-decision test and granted summary judgment to Duffy, accepting her affidavit that an investigator ordered segregation to protect safety and an investigation.
On appeal the Fourth Circuit held Mt. Healthy governs prisoner retaliation claims (with adaptation for "unitary event" cases), but reversed the grant of summary judgment because genuine disputes of material fact existed and the district court improperly resolved credibility at summary judgment.
The court explained that when a protected act itself triggers a response (a "unitary event"), the proper burden-shift asks whether the defendant would have acted absent a retaliatory motive; here Duffy’s explanations were inconsistent and contested by Martin’s evidence.

Issues:

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Mt. Healthy's same-decision burden-shifting framework applies to prisoner First Amendment retaliation claims	Martin argued Mt. Healthy should not govern (or should be modified) in cases where protected conduct is the sole triggering event	Duffy argued Mt. Healthy applies and she can defeat liability by showing she would have acted regardless of the grievance	Court: Mt. Healthy applies to prisoner retaliation claims, but in "unitary event" cases the inquiry focuses on whether defendant would have acted absent a retaliatory motive
Proper formulation of the same-decision test when protected conduct itself triggers the adverse action	Martin: when the grievance itself prompted segregation, the test should focus on defendant's motive (not just the plaintiff's conduct)	Duffy: same-decision test as traditionally applied suffices	Court: adopts the Greenwich approach for unitary-event cases—defendant must show she would have acted absent any retaliatory motive
Whether Duffy met her burden to prove she would have segregated Martin absent retaliatory motive	Martin: Duffy’s justifications are pretextual, inconsistent, and unsupported (no concrete safety threats or investigation evidence)	Duffy: investigator ordered segregation; action protected safety and investigation integrity	Court: genuine disputes of material fact exist; district court improperly credited Duffy at summary judgment—reversed and remanded
Whether a blanket policy of segregating all inmates who file complaints justifies Duffy’s action	Martin: a policy segregating all complaining inmates would be unconstitutional	Duffy: did not assert she acted pursuant to such a blanket policy	Court: reserved the question (not decided); noted such a policy would be suspect and no evidence of it here

Key Cases Cited

Mt. Healthy City Sch. Dist. Bd. of Ed. v. Doyle, 429 U.S. 274 (1977) (establishes same-decision burden-shifting framework in retaliation cases)
Martin v. Duffy, 858 F.3d 239 (4th Cir. 2017) (prior appellate decision holding plaintiff stated a retaliation claim and denying qualified immunity at motion-to-dismiss stage)
Rauser v. Horn, 241 F.3d 330 (3d Cir. 2001) (applies Mt. Healthy framework in prison retaliation context)
Greenwich Citizens Comm., Inc. v. Cntys. of Warren & Washington Indus. Dev. Co., 77 F.3d 26 (2d Cir. 1996) (articulates "unitary event" formulation—focus on defendant's retaliatory motive)
Hewitt v. Helms, 459 U.S. 460 (1983) (legitimate penological interests justify certain confinement decisions)
Turner v. Safley, 482 U.S. 78 (1987) (deference to prison administrators' day-to-day judgments)
Anderson v. Liberty Lobby, 477 U.S. 242 (1986) (summary judgment standard regarding credibility and inferences)