In most ongoing series, there are several job positions that need to be filled. Often, these roles will be filled by the characters of a Five-Man Band. But in some series, there is one specific job that tends to have a high turn-over rate. This allows the author to keep bringing in new characters who have skills useful to that particular story or who can betray the operation from the inside.
When played straight, these positions become an obvious Chekhov's Gun; whoever the "new guy" is, everyone knows that they will become significant later on. However, this character can still turn out to be no more or less relevant than anyone else.
The nature of this job lets the writers kill this character off, if they want to, usually in some emotionally significant way. Retirony may come into play. Characters in Dead End Jobs do tend to hang around long enough for viewers to get attached, Chekhov's Gunman or not.
When done poorly, the audience may start wondering why the HR department doesn't get rid of the job altogether and delegate that work to established and trustworthy characters.
Please note that this trope does not apply to Red Shirt characters of the type you tend to find on Star Trek. Characters who hold jobs of this type tend to last for a full plot arc, be significant to that plot arc, and then get conveniently shuffled off-screen at the end to make room for the next plot-significant character.
Not to be confused with a job that offers no career advancements.
A sub-trope of High Turnover Rate.
- This is Spın̈al Tap has a running gag where the band's drummers keep dying in improbable ways, to the point that when their keyboard player dies, they find out that he used to be a drummer.
- The Bastard Operator from Hell series has the post of Systems Supervisor as this, with said supervisor being killed off by the BOFH or the PFY once they become too dangerous. Whether or not this can also be said for the Director of IT post is debatable.
- In one of Isaac Asimov's George and Azazel stories, the first head of the Committee on Diminishing Returns lasts thirty-two years, the next one sixteen, the next one eight... After the sixth, they decide the Committee's name must be unlucky, and a change is in order. It works.
- The position of Postmaster General in Going Postal. Vetinari gives the job to Moist Von Lipwig as an alternative to being hanged, on the off-chance that he might actually succeed in reviving the Post Office, but generally expecting him to be killed, as the job had already claimed the lives of some of Vetinari's clerks.
- In the earlier books, when wizards were prone to Klingon Promotion, the position of Archchancellor was never held by the same character two books in a row. This changed when Moving Pictures introduced the seemingly unkillable Mustrum Ridcully.
- The job of Defense Against the Dark Arts professor in the Harry Potter series. In seven books, they go through seven professors, and every one of them is significant to the plot. Dumbledore even lampshades this at one point. As it turns out, Voldemort had jinxed the job so that no one who got it could hold it for more than a year, and this persisted until his death.
- The President of the United States is this in 24. During the series there are 7 acting presidents shown on screen and two more off screen (Palmer's VP is acting president in The Game and whoever was President during season 1) across 8 seasons and in the series finale the current President resigns!
- Ever since Thrall abdicated the position of Warchief of the Horde in World of Warcraft, said position has been occupied by three separate people over the course of five expansions. The first after Thrall, Garrosh, was an aggressive warmonger who instigated numerous fights against the Alliance only to end up deposed come Mists of Pandaria. His successor, Vol'jin, was a more serene Warchief, until his sudden death at the start of Legion, in which he appointed Sylvanas Windrunner as Warchief, who would end up being as excessively hostile as Garrosh (and ultimately be revealed to be the pawn of the Jailer in Shadowlands). After the events of Battle for Azeroth, the Horde abandons the idea of having a central Warchief in supreme command of the Horde's military decisions, and have a council for each of their nations to vote on such matters.
- The position of explosives expert in Tagon's Toughs in Schlock Mercenary has a relatively high turnover rate: So far it's killed at least two Mauve Shirts who have held it (Kevyn, their unofficial expert, has also died repeatedly). Many of the grunts believe the position to be cursed, although its current holder doesn't seem too fussed.
- South Park's constant killing of Kenny is a parody of this trope, although being as Kenny continues to be a cast member, ultimately is an aversion.