OPINION OF THE COURT
I. JURISDICTION
Great Lakes Dredge & Dock Company appeals from a final judgment entered in favor of appellee, John D. Shade, on October 22,1997, pursuant to a jury verdict for Shade in the amount of $870,000, and from the denial of its renewed motion to alter or amend the judgment, or, in the alternative, for a new trial entered on November 19, 1997. The district court had jurisdiction over this case under 28 U.S.C. § 1331, and this court has jurisdiction pursuant to 28 U.S.C. § 1291.
II. FACTUAL AND PROCEDURAL HISTORY
The U.S. Army Corps of Engineers awarded Great Lakes a contract to dredge and renourish the beach at Cape May, New Jersey, which Great Lakes began performing on November 12, 1994. This project consisted of removing sand from the ocean floor at offshore locations and transferring the sand to the beach through 6600 feet of steel pipe, known as the submersible line. See app. at 637-40. The dredge Long Island removed the sand from the ocean floor; and once its hopper compartments were full, the tug Con-Ion propelled the dredge to a self-contained offshore transfer station buoy (“scots buoy”), a large round floating buoy secured by four anchors. See id. at 337, 689. In order to transport the sand to the beach, the dredge would secure itself to a pipe attached to the scots buoy which in turn was connected to the submersible line. The dredge then would pump its load of sand into the pipe and through the submersible line. Upon reaching the beach, the submersible line ended at a “Y” valve. This valve, which controlled the flow of the sand, connected the submersible line to an additional line, known as the shore line, extending in both directions along the beach parallel to the ocean. As the sand flowed out of either end of the shore line, bulldozers positioned the sand on the beach according to a predetermined plan.
Shade arrived at the Cape May worksite on the night of December 8, 1994, and began to work for Great Lakes at the site on December 9, 1994. See id. at 472. Since 1974, Shade had been employed by various companies to assist in such dredging projects; and in the four years prior to his injury, the majority of his work had been with Great Lakes. See id. at 468-69. Shade received his work assignments through his union, Local 26, Marine Division, International Union of Operating Engineers, AFL-CIO. When he was unemployed, Shade would place his name on the out-of-work list until Local 25 assigned him to a new job. See id. at 346-48, 519-20.
Great Lakes previously employed Shade from September 1992 until Februаry 1994. See id. at 54-55, 509-10. However, beginning in March 1994, Shade worked for Bean-Weeks Joint Venture, another dredging contractor, as a deckhand. See id. at 55, 510. Bean-Weeks subsequently fired Shade, and *146 he remained without work until Great Lakes hired him for the Cape May job.
Great Lakes asserted that it hired Shade for Cape May as a shoreman, see id. at 648, pursuant to its contract with Local 25 which mandated the hiring of a shoreman for this type of job. See id. at 69, 684-87. In fact, Great Lakes’ superintendent, David P. Rappe, and the Local 25 union steward, Cecil C. Jackson, Sr., both testified that Great Lakes hired Shade as a shoreman. See id. at 687, 794; see also id. at 648 (testimony of deck captain James D. Joyner), 772-73 (testimony of shoreman Joseph H. Gurganus).
Shade, on the other hand, contended that Great Lakes hired him as a deckhand assigned to the anchor barge 110, which assisted in the dredging operation, see id. at 479, and that the shore gang was already in place when he arrived to work at Cape May. See id. at 472. Both Shade and his supervisor, Mark Oldham, testified that he was employed primarily on the navigable waters off Cape May. See id. at 316-17, 473-84. In fact, Oldham testified that Shade was on the water 90% of the time that he worked at the Cape May project. See id. at 316-17.
When Shade arrived at Cape May, the submersible line had been laid, the scots buoy was in place, and the Long Island had begun to dig the first portion of sand from the ocean floor. See id. at 473, 642-43, 681-83, 793-94. The dredge filled its hoppers and connected to the scots buoy, but it was not able to pump the sand to the beach because of a hole in the submersible line. See id. at 157. As a result, from December 9th, when Shade began to work at Cape May, until the early morning hours of December 13th, Shade worked on the water assisting in the repair of the submersible line, see id. at 690-92, while assigned to anchor barge 110. See id. at 473-75.
After the workers completed the repair of the submersible line, the Long Island once again had the capacity to pump sand to the beach. However, between December 13th and December 30th, the dredge only operated from the evening of December 19th until December 22nd and from the evening of December 25th until December 30th because of poor weather conditions. See id. at 249-66, 694-99. Great Lakes presented evidence that during the periods of bad weather, Shade remained on the beach, assisting welders and waiting on standby in case the weather cleared. See id. at 601-02, 699-700, 745-46. Shade, on the other hand, contended that during poor weather he would work in the harbor which was protected from the rough seas. See id. at 311-14. For instance, Shade testified that he helped construct a second submersible line, see id. at 480, and assisted in repairing the scots buoy. See id. at 558-59; see also id. at 305-15 (testimony of Oldham).
Great Lakes offered testimony that when the dredge was able to pump sand to the beach, Shade performed the work of a shore-man on the beach. See id. at 695-99. For example, Shade assisted welders in securing the shore line, operated the “Y” valve, and put fuel in welding machines. See id. at 536-37, 769. Shade disputed Great Lakes’ account of his work between December 19th and December 22nd, and testified that he worked on the water during that period. See id. at 556. However, he did not dispute that he primarily worked on the beach performing these shore based duties from December 25th until December 30th. See id.
While working on the beach on December 30th, Shade assisted Oldham in refueling a welding machine, a рrocedure which required lifting the machine with a front-end loader. See id. at 485-87. While Oldham was operating the loader, the raised claw of the loader dropped unexpectedly and severed Shade’s thumb. See id. at 486-88. Shade testified that even though doctors were able to reattach his thumb, see id. at 491, he basically has no use of the thumb, see id. at 501-02, and could not return to work in his prior capacity. See id. at 502-03.
After initially receiving benefits under the Longshore and Harbor Workers’ Compensation Act, 33 U.S.C. § 901 et seq. (“LHWCA”), Shade filed a complaint against Great Lakes on January 31, 1997, seeking damages under the Jones Act, 46 U.S.C. app. § 688(a), and the general maritime law doctrine of unseaworthiness. On September 8, 1997, Great Lakes filed a motion for sum *147 mary judgment on the ground that Shade was not a seaman. The district court denied this motion without opinion on September 24, 1997. On Octobеr 7, 1997, Great Lakes filed a motion in limine to preclude testimony at trial regarding Shade’s prior employment with Great Lakes. The district court, however, deferred ruling on the motion and at the trial ultimately permitted Shade to introduce evidence of his prior employment. See app. at 54-55, 509-10.
A jury trial began on October 14, 1997, solely on the Jones Act claim. At the conclusion of the presentation of Shade’s evidence, Great Lakes moved under Fed.R.Civ.P. 50 for a judgment as a matter of law on the ground that the evidence did not establish that Shade was a seaman at the time of his injury. See app. at 41, 589. However, the district court deferred ruling on that motion. See id. at 589. Great Lakes renewed its Rule 50 motion at the conclusion of all of the evidence, see id. at 45, 844; and again, the district court deferred its ruling. See id. at 844.
The district court submitted a series of special interrogatories to the jury; and on October 21, 1997, the jury found that Shade was a seaman, and returned a verdict in his favor in the amount of $870,000. See id. at 946-47. Pursuant to this verdict, the district court entered judgment against Great Lakes on October 22, 1997. See id. at 7. Great Lakes subsequently filed a renewed motion to alter or amend the judgment pursuant to Fed.R.Civ.P. 50(b), or, in the alternative, for a new trial under Fed.R.Civ.P. 59. See app. at 7. However, the district court denied this motion on November 19, 1997, and Great Lakes filed its timely notice of appeal on December 18,1997. See id. at 7, 9.
III. DISCUSSION
A. Jones Act Seaman Status
The Jones Act provides that “[a]ny seaman who shall suffer personal injury in the course of his employment may, at his election, maintain an action for damages at law, with the right of trial by jury.” 46 U.S.C. app. § 688(a). However, the Jones Act does not definе the critical term “seaman” and thus “leaves to the courts the determination of exactly which maritime workers are entitled to admiralty’s special protection.”
Chandris, Inc. v. Latsis,
In developing a test for seaman status, the Court noted that prior cases recognized “a fundamental distinction between land-based and sea-based maritime employees.”
Chandris,
From these basic principles, the Court in Chandris set forth a two-part test to determine if an individual is entitled to Jones Act protection as a seaman:
First, as we emphasized in Wilander, ‘an employee’s duties must “contribute to the function of the vessel or to the accomplishment of its mission.” ’ The Jones Act’s *148 protections, like the other admiralty protections for seamen, only extend to those maritime employees who do the ship’s work....
Second, ... a seaman must have a connection to a vessel in navigation (or to an identifiable group of such vessels) that is substantial in terms of both its duration and nature.
Id.
at 368,
In its appeal, Great Lakes focuses on this temporal concept. Specifically, Great Lakes argues that in evaluating an employee’s duties under the initial prong of the seaman status test, the fact-finder must consider only the activities of an employee at the time of his or her injury. Great Lakes maintains that under this interpretation it is entitled to a judgment as a matter of law, because it contends that Shade was not acting as a seaman at the time of his injury. Alternatively, with respect to the latter portion of the seaman status test, Great Lakes asserts that only evidence regarding the employee’s present assignment with his or her current employer is relevant and admissible to establish a substantial connection to a vessel in navigation. Thus, Great Lakes argues that if it does not receive a judgment as a matter of law, it is entitled to a new trial because the district court permitted Shade to introduce evidence regarding his prior employment history.
After considering these arguments, we hold that Great Lakes is not entitled to a judgment as a matter of law with respect to Shade’s seaman status, because Shade presented sufficient evidence to create an issue of fact for the jury to consider. However, we will reverse the judgment entered against Great Lakes, and remand this case to the district court for a new trial, because the district court abused its discretion to admit evidence regarding Shade’s prior employment history. 2
B. Duties Of The Employee
Under the first portion of the
Chandris
seaman status test, an employee must demonstrate thаt his or her duties “ ‘contribute to the function of the vessel or to the accomplishment of its mission.’ ”
The question of seaman status is often “fact specific,” and “[i]f reasonable persons, applying the proper legal standard, could differ as to whether the employee was a ‘member of a crew,’ it is a question for the jury.”
Wilander,
Although the contours of the seaman status test remain difficult to apply, the Supreme Court has provided a number of relevant principles to guide our determination of this issue. First, the Court has emphasized that its status-based approach to the definition of the term seaman “determines Jones Act coverage without regard to the precise activity in which the worker is engaged at the time of the injury.”
Chandris,
For instance, in
Thibodeaux v. Torch, Inc.,
Second, although an examination based solely on the specific activity at the time of injury is too narrow, the Supreme Court also has cautioned against too broad of a perspective in examining an employee’s duties. In evaluating the duties of an employee under the seaman status test, courts should not consider an employee’s entire work history, but must consider only the nature of the employee’s basic job assignment as it existed at the time of injury. After all, as the Court has stated, “[w]hen a maritime worker’s basic assignment changes, his seaman status may change as well.”
Chandris,
For example, we can imagine situations in which someone who had worked for years in an employer’s shoreside headquarters is *150 then reassigned to a ship in a classic seaman’s job that involves a regular and continuous, rather than intermittent, commitment of the worker’s labor to the function of a vessel. Such a person should not be denied seaman status if injured shortly after the reassignment, just as someone actually transferred to a desk job in the company’s office and injured in the hallway should not be entitled to claim seaman status on the basis of prior service at sea.
Id.
at 372,
Applying these principles to the present appeal, we cannot say that Great Lakes is entitled to a judgment as a matter of law. Although Shade was on shore assisting in the refueling of a welding machine when he was injured, this activity cannot be the sole determining factor to resolve whether Shade was a seaman. Instead, we must view Shade’s status in the larger context of his employment related duties. In deciding which duties to consider, a reasonable juror could conclude that Shade’s entire performance at the Cape May job consisted of a single , assignment, because his duties remained fairly constant during the pendency of that dredging operation. Under this broader analysis, Shade presented sufficient evidence such that a reasonable jury could determine that his duties during the Cape May job contributed to the function of a vessel or to the accomplishment of its mission. While working at Cape May, Shade spent a considerable amount of his time at the beginning of his employment working on the water with the anchor barge 110 to repair the submersible line. See app. at 473-75, 690-92. Beyond this initial placement, Shade presented evidence at trial that he spent significant time on the water as a deckhand on a vessel in navigation performing his job responsibilities. See id. at 311— 14, 316-17, 473-84. Additionally, even Shade’s duties on the beach were not unrelated to the work of a vessel in navigation; instead, they contributed to the purpose of the dredging operation. Viewing this evidence in a light most favorable to Shade, a reasonable juror could find that Shade’s job responsibilities at Cаpe-May consisted of a single job assignment and contributed to the function of a vessel in navigation, thereby satisfying the first requirement of the Chan-dris test. Thus, because Shade presented sufficient evidence for a reasonable juror to find in his favor, the district court correctly denied Great Lakes’ motion for a judgment as a matter of law. 4
C. Connection To A Vessel
Under the second part of the
Chandris
seaman status test, an employee must demonstrate that he or she has “a connection to a vessel in navigation (or to an identifiable group of such vessels) that is substantial in terms of both its duration and nature.”
For instance, in
Braniff v. Jackson Ave.-Gretna Ferry, Inc.,
We first considered the Fleet Seaman Doctrine in
Reeves,
In the present case, Shade had worked as a' deckhand since 1974. See app. at 468. From September 1992 until February 1994, Great Lakes employed Shade as a deckhand. See id. at 54-55, 509-10. However, beginning in March 1994, Shade worked for Bean-Weeks. See id. at 55, 510. Great Lakes did not re-employ Shade until December 1994 for the Cape May job. See id. at 472. During trial, Shade sought to introduce evidence regarding his employment history under the Fleet Seaman Doctrine in order to satisfy the substantiality requirement of the Chandris seaman status test. Over the objection of Great Lakes, the district court permitted Shade to offer two types of prior employment evidence. First, Shade introduced a general account of his work history, with Shade testifying that he had been working on the water since 1974, see id. at 468, and had been a deckhand “all my life,” id. at 479, and with three other witnesses testifying that Shade had been a deckhand throughout his career. See id. at 617 (testimony of Thomas E. Chandler), 660-61 (testimony of Joyner), 809 (testimony of Jackson). Second, the district court admitted specific evidence regarding Shade’s work history as a deckhand for Great Lakes from September 1992 until February 1994. See id. at 54-55, 468-69, 842.
In its appeal, Great Lakes maintains that it is entitled to a new trial because this prior employment evidence was not relevant to the determination of Shade’s seaman status and thus should not have been admitted under Fed.R.Civ.P. 402.
5
We exercise an
*152
abuse of discretion standard to review “a denial of a request for a new trial based on the district court’s alleged error in ruling on the admissibility of evidence.”
Affiliated Mfrs., Inc. v. Aluminum Co. of America,
Even though the Fleet Seaman Doctrine permits an employee to aggregate contacts with multiple vessels, it is clear that these contacts must have occurred with vessels owned or controlled by the same employer. As the Supreme Court has stated, “[cjonsid-ering prior employments with independent employers in making the seaman status inquiry would undermine ‘the interests of employers and maritime workers alike in being able to predict who will be covered by the Jones Act ... before a particular work day begins.’ ”
Harbor Tug,
520 U.S. at -,
When introducing evidence concerning his general work history, Shade and the other witnesses did not state with any specificity who employed him during his work career. However, undoubtedly at least a portion of this evidence concerned employment with employers other than Great Lakes. For instance, Shade testified that he worked for Bean-Weeks during a portion of 1994; and Shade provided evidence that out of his twenty year career, he worked for Great Lakes during the Cape May job and between September 1992 and February 1994. From this evidence, it is reasonable to conclude that this general work history evidence involved other employers beyond Great Lakes. Thus, because the evidence of Shade’s general work history apparently referred to employment with independent employers, this testimony clearly was irrelevant to the determination of Shade’s seaman status, and the district court abused its discretion to have permitted the jury to consider it. 7
The admission of evidence concerning Shade’s specific work history with Great Lakes poses a more difficult question. Typically, an employee introducing evidence of connections to other vеssels in an employer’s fleet under the Fleet Seaman Doctrine has worked for the same employer on a continual, uninterrupted basis.
See, e.g., Braniff,
The Supreme Court’s consideration of the substantiality prong of the
Chandris
seaman status test in
Harbor Tug,
The Court of Appeals for the Fifth Circuit has addressed this question more directly in
Pattous-Tully Transp. Co. v. Ratliff,
Excluding such evidence is consistent with the Fleet Seaman Doctrine. Although the doctrine developed as a means to protect employees from losing seaman status “when on temporary non-navigable assignments or when assignments preclude attachment to one,”
Reeves,
*154 Applying this rationale to a situation where an employment relationship is terminated and subsequently the employer rehires the employee, the employee’s posture is more akin to those excluded by the doctrine rather than those afforded protection under it. After the termination of the employment relationship, the employee severs any duties that the employee had towards the employer with respect to the performance of the former job. The employee does not have any ongoing or regular responsibilities relating to the vessels in the former employer’s fleet. Upon being rehired, the employee does not recapture that prior relationship. Instead, the employee adopts a prospective set of duties and responsibilities that may be distinct from the employee’s former performance, and the connections the employee once had to any vessels in the employer’s fleet are thus separate, from the employee’s new status. In effect, the employment in the new position could be considered to be for an entirely different employer, and as such, evidence of the prior employment would have no relevance to the employee’s later position with the employer. Thus, we hold that evidence of an employee’s prior assignment with the same employer is not admissible under the Fleet Seaman Doctrine if those assignments were not part of a continuous employment relationship between the employer and employee. 8
Shade severed all ties with Great' Lakes and with his prior assignments with the company by working for Bean-Weeks. When Shade returned to Great Lakes after approximately ten months, his final employment only concerned the Cape May job and his duties during that dredging operation. He had no regular responsibilities that required him to move from vessel to vessel in Great Lakes’ fleét; instead, he was hired for a distinct job and only could establish a connection to vessels being used at the Cape May dredging operation. Thus, because he did not maintain a cоntinuous employment relationship with the company, the evidence of Shade’s prior employment with Great Lakes was completely irrelevant to the determination of his seaman status, and the district court abused its discretion to have admitted this prior employment history into evidence.
Because the district court abused its discretion to admit Shade’s prior employment history into evidence, “we must reverse unless we find that its admission was harmless error.”
Lippay,
[T]he Supreme Court has said that in evaluating the status of an individual, you do not look at what he was doing on the day of the injury, or even at the time of the injury. You look at Mr. Shade’s history with this company Great Lakes.
And if you do that, you will know that Mr. Shade has always been a seaman for Great Lakes....
And you also know that while he was on the beach [at Cape May] he was called out to perform functions on the sea. That is not necessary for you to find. You can find that he wasn’t, and still determine he was a seaman, because, as the records will show, he has worked for Great Lakes for over four years, every time as a seaman, as a deck hand.
App. at 849. Because of the centrality of the issue and the extremely prejudicial use of this evidence, we cannot say that it is highly probable that the error did not affect the *155 verdict. 9 Therefore, we will reverse the judgment and remand this matter for a new trial in a manner consistent with this opinion.
Notes
. In addition, the second portion of the test contains a direct measurement of time through its durational element.
. Great Lakes also raised a number of other issues in its appeal, such as the failure to hold a charge conference, the alleged inadequacy of the district court's jury charge, and the lack of a set-off against the judgment for the amounts Shade received under the LHWCA; however, we will not reаch these issues on this appeal as their resolution could not affect our result.
. The Court in
Wilander
definitively resolved the "inconsistent use of an aid in navigation requirement” that arose between 1927 and 1946, "during which [time] the Court did not recognize the mutual exclusivity of the [LHWCA] and the Jones Act.”
Id.
at 348,
. We note that in malting this determination, we do not consider the evidence of Shade’s prior еmployment history with Great Lakes, because as we hold below, such evidence is inadmissible, and thus cannot be considered by a court in deciding a motion for a judgment as a matter of law.
See Lightning Lube,
. Rule 402 provides: "All relevant evidence is admissible, except as otherwise provided by the *152 Constitution of the United States, by Act of Congress, by these rules, or by other rules prescribed by the Supreme Court, pursuant to statutory authority. Evidence which is not relevant is not admissible.”
. Arguably we should exercise plenary review on the evidence issue. Of course, if we did, we would reach the same result. Thus, we do not prejudice Shade by using an abuse of discretion standard.
. Even if Shade's employment prior to 1992 had been with Great Lakes our result would be the same, because as we hold below, such emplоyment evidence is not admissible if the employment relationship was not continuous.
. Conceivably there could be such a short interruption in an otherwise continuous employment relationship that it might be reasonable to regard the employment as practically continuous and thus to apply the Fleet Seaman Doctrine. Here, however, the interruption was not so short, and Shade worked for Bean-Weeks in the interim. These facts preclude a finding that Great Lakes' employment of Shade was practically continuous.
. We do not preclude admission of evidence of the character leading to the reversal here if the evidence is admitted for a purpose other than to establish an employee’s seaman status. Of course, in the event that such evidence is admitted, the district court should give an appropriate instruction as to its use.
