Invoking diversity jurisdiction, 28 U.S.C. § 1332, plaintiff-appellant John S. Porter, a Floridian, sued several local citizens, including appellee Ronald Griffin, in the United States District Court for the District of New Hampshire. 1 The district court, acting on a Rule 12(b)(6) motion, dismissed Porter’s complaint against Griffin for failure to state a cognizable claim. Following entry of judgment under Fed.R. Civ.P. 54(b), Porter appeals.
I
“In reviewing a Rule 12(b)(6) dismissal, we take the well-pleaded facts as they appear in the complaint, indulging every reasonable inference in plaintiff’s favor.”
Correa-Martinez v. Arrillaga-Belendez,
1. Griffin, Porter, and Raycraft worked for a common employer, Rockingham Venture, Inc. (RVI), which owned and operated a racetrack in Salem, New Hampshire. Griffin was a supervisor whose duties included reviewing safety precautions and directing work crews. Porter and Raycraft were subordinates who did plumbing repairs and general labor.
2. On July 20, 1987, the three men were toiling near the ladies’ rest room at the racetrack. Performance of the job required Porter to work in a trench. He was not furnished with any headgear or other protective equipment.
3. Several times, Porter asked Griffin to remove a propane tank hovering near the trench’s edge. Griffin had both the authority and the wherewithal to relocate *39 the tank, but neglected to do so. Eventually, misfortune struck. Raycraft, said by plaintiff to be a “known user and abuser of alcohol,” attempted to leap across the fissure, causing the omnipresent tank to fall into the trench. The tank struck Porter, seriously injuring him.
The district court, reading these facts liberally in plaintiffs favor, nonetheless believed Griffin to be immune from suit. We agree.
II
State substantive law controls in this diversity case.
See Erie R. Co. v. Tompkins,
The New Hampshire Supreme Court amplified the purport of
Rounds
in
Tyler v. Fuller,
— N.H.-,
The theory and burden of this line of cases is apparent. In New Hampshire, as elsewhere, an employer has a nondelegable duty to provide employees with a safe place to work.
See, e.g., Moore v. Company,
Ill
We think that these authorities are dispositive of the instant appeal. Griffin
*40
was the overseer at the job site and, as the amended complaint unambiguously alleges, was in charge of safety precautions. In carrying out that responsibility, he was carrying out RVI’s nondelegable duty to its work force. Requiring Porter to perform his chores in the presence of a known, curable hazard presumably violated RVI’s duty to furnish Porter a safe place to work. Leaving the dangerous condition in place, particularly after attention had been called to it, presumably violated Griffin’s duty to RVI. Yet, nothing in the amended complaint’s factual scenario suggests that Griffin was guilty of any act or omission apart from, or beyond the scope of, RVI’s duty to ensure that “[t]he working conditions [would] be as safe as the nature of the place of employment [here, the trench] reasonably permitted].”
Wasley,
Appellant focuses obsessively on a single excerpt from the Tyler opinion:
An important factor to consider is the nature of the alleged negligence. If there is some direct involvement which creates a personal duty of care, liability may be asserted notwithstanding Rounds if such an independent duty is breached by a supervisory employee acting in the capacity of a co-worker/co-employee.
Here, the facts alleged in no sense show that Griffin acted (or more precisely put, failed to act) beyond his supervisory capacity. Despite his direct involvement in the mishap, Griffin was standing in the shoes of the employer, plain and simple, when he neglected to remedy the on-site hazard and thereby contributed to the happening of the accident. He was obliged to relocate the tank by virtue of the employer’s duty, which had devolved upon him as RVI’s agent; that Porter also requested the tank’s removal was beside the point. Because Rounds and its progeny do not allow an injured employee to maintain an otherwise-precluded tort suit by the simple expedient of calling a failure to provide safe working conditions by some other appellation, Porter cannot sue Griffin on these facts.
IV
We need go no further. In diversity jurisdiction, “[o]ur function is not to formulate a tenet which we, as free agents,
*41
might think wise, but to ascertain, as best we can, the rule that the state’s highest tribunal would likely follow.”
Kathios v. General Motors Corp.,
Affirmed.
Notes
. Plaintiff’s case against one such person, James Raycraft, remains pending in the district court.
. In the case of a supervisory employee, "something extra," as that phrase was intended by the
Tyler
court, must mean something apart from, beyond, or transcending “the category of supervisory duties which the [supervisor] performs for the employer” in order to make the workplace reasonably safe.
Tyler,
. Indeed, if "direct involvement” itself can create an independent duty duplicative of the employer’s duty, as appellant asseverates, then the exception would harbor the potential to swallow virtually the entire rule. We do not think
Rounds
and
Tyler
can so easily be skirted, especially since appellant's view of the primacy of direct involvement comes perilously close to reintroducing the dichotomy between "active” and “passive" negligence specifically rejected by the court in
Tyler,
. We have considered certification of this case to the New Hampshire Supreme Court, but believe it unnecessary, for reasons stated elsewhere, to embark on such a course.
See Kassel,
