In Boys Love GenreAi no Kusabi, Riki was a Sex Slave of Iason Mink and has been free for about a year. Iason then comes to claim Riki back. When Riki refuses to return and Iason has Riki's best friend Guy in "custody", Iason threatens to brainwash Guy into an Empty Shell of a sex doll unless Riki agrees to come back as his Pet.
Yuugen Kaisha: Corrupt museum director, Mr. Nagasuki, pulls this on Natsuki, in Incident File 03. First, by pulling the night crew of the exhibit she which was discovered by her deceased boyfriend, Narita was working on. Then by threatening to cut off the exhibit's funding... unless she "co-operated".
Natsuki almost gives in to the pressure but, thankfully, she had both Phantom Quest and Narita's ghost to protect her.
Ralph König's Killer Condom (Kondom des Grauens) begins with this trope - underage female student hates herself for it, but chooses to let her professor have his way with her in turn for passing an exam. Lucklily, the condom he picks turns out to be a genetically engineered monster that eats his dick and then crawls away, leaving him bleeding and her laughing hysterically.
In one Batman and the Outsiders storyline, a professor tries this on a student, who refuses and tries to kill herself when threatened with having her education ruined. When GeoForce hears about it, he tries to pound the perp into gelatin, but is stopped by Superman. Batman comes through with a more ethical and lawful solution, finding some of the professor's other victims and convincing them to file charges.
The Green Hornet fanfic The Hornet's Girl plays with this trope. The narrator is an escort at a speakeasy and reluctantly agrees to "entertain" the Green Hornet after her boss threatens to fire her if she doesn't. The story takes place during the Depression and she couldn't afford to lose her job. Fortunately, the Hornet is a gentleman and politely turns her down once he sees her discomfort (it also helps that he was on a mission and wasn't interested in doing it anyway).
In The Cheat, after the foolish heroine steals $10,000 and then has to replace it, her Faux Affably Evil neighbor offers to give her the money, if she'll have sex with him.
The 1953 film Hilja - Maitotyttö is a classic example of Finnish rural romanticism. The main plot: evil farm owner lusts after his eponymous dairy maid Hilja, a young graduate loves her.
In Horrible Bosses, Dale's boss Julia does this to him as part of a concerted campaign of sexual harassment.
007 himself does something like this in the beginning of Thunderball. An attractive physical therapist coolly rebuffs Bond's flirtations, and is all business in her dealings with our boy James. But when she leaves Bond alone - and defenseless- in some sort of back-stretchy machine, things take a turn for the worse when an enemy comes to kill him by turning the machine on too high. The therapist comes back, apologising profusely, and begging Bond not to report her for leaving him. Bond tells her he can be convinced to keep this their little secret. Even if he didn't intend for it to come off as sexual he certainly does nothing to clear things up when she takes it that way.
The story of Joseph and Potiphar's wife in The Bible: mentioned more or less in passing in the Genesis, but illustrated with detail in the apocryphal Testament by Joseph. Joseph was keen on following the pre-Commandments Jewish law in any case. Potiphar's wife introduced heavy threats and blackmailing into the play, finally accusing him of raping her in a fit of rage after Joseph escaped her rape attempt. Afterwards she promised to set him free from prison, where he had been sent, if he would do as she wanted.
In Angela's Ashes, Angela is given the chance to give her poor, suffering family everything it needs...but she has to sleep with a distant relative in return.
In The Girl with the Dragon Tattoo Lisbeth Salander is repeatedly molested and eventually raped by her new guardian whenever she asks for more money from her account. When he started out sexually harassing, molesting, and orally raping her, Lisbeth assumed that he was just on a power trip. However, after he violently anally rapes her, she finds out that she misjudged him in that he wasn't just on power trip, but he was a full blown sexual sadist who took advantage of his guardianship position over her (since she was declared legally incompetent).
Invoked in season 3 of The L Word, after Helena is seduced by a filmmaker whose documentary she's funding. One day, the filmmaker gets her role playing during foreplay, and gets her to pretend on camera that her support of the film is contingent upon the filmmaker having sex with her. The next day, Helena's served with a sexual harassment lawsuit; as it turns out, the relationship was a Go Seduce My Arch Nemesis plot by the filmmaker's boyfriend to squeeze money out of Helena.
Law & Order: In Season Five, The D As office prosecute a councilman for the rape of a co-worker (which they do because they can't charge him for raping and badly injuring another woman who later died in a car accident). As it turns out, the councilman didn't rape his co-worker so much as force her to have consensual sex with him under threat of losing her job and ruining her career. Jack McCoy inventively prosecutes the councilman under a count of 'Larceny by Extortion'. The councilman gets convicted.
JAG: In the first season episode "The Prisoner" Harm has been captured by the Chinese while sailing off the coast of Hong Kong (in 1996 before the transfer). Commander Allison Krennick has through unofficial contacts learned of Harm’s whereabouts and a Chinese traitor is willing to bring him back in exchange for political asylum in the United States. The Assistant Secretary of State is reluctant at first, but when Krennick threatens to call his wife and say that she’s his lover he quickly changes his mind.
Crops up in an episode of Castle with a photographer who makes models sleep with him in order to get good shots. The victim of the week tried to record the photographer propositioning her so she could expose his behavior as she had no intention of cheating on her husband. Becomes even worse when it's revealed that her husband killed her because he thought she was cheating on him.
In Sliders episode The Dream Masters one of the titular Dream Masters does this to Wade requesting sex for not tormenting her on her dreams.
In one episode of Threes Company, Jack is harassed by his new boss. When he tells her he won't have sex with her, she fires him. When he takes her to court, the judge rules out the case because of the way Jack dresses.
The Asshole Victim in one episode of CSI: NY was a lecherous department store manager who taped one of his assistant managers with her hands in the till. After he blackmailed her into having sex with him she thought it was just a one-time thing, but when he tried to force her she killed him in self-defense.
The story of Bellerophon in Classical Mythology begins with one of these. After his exile, Bellerophon is put up at the court of Proetus, the King of Tiryns. The Queen—whose identity is disputed—tries to seduce him, but for various reasons (including Sacred Hospitality), Bellerophon refuses. The Queen claims Bellerophon raped her; bound by Sacred Hospitality not to kill Bellerophon, Proetus sends Bellerophon to his father-in-law in Lycia...and for various reasons this begins the tale of Bellerophon's labors.
A minor character in Doonesbury is a soldier who was forced into sex by her commanding officer and is now in therapy. The strip goes surprisingly in-depth on the various psychological conflicts she's now suffering. (Notably, one of her issues is that she never directly said no to the officer, and thus feels that she consented—this is lessened to a degree when she discovers that his actions are classified as "command rape.")
Subverted in an episode of The Simpsons. Moe entered a bartending competition, and the one female bartender, a beautiful buxom blonde from Los Angeles (named Titania) seemed to be winning (even though she gave a wrong answer in a Duff beer trivia contest, and her "trick pouring" consisted of jumping up and down while running the beer taps)...then it came to the drunk toss, where she was disgusted by the drunk she had to toss. She angrily turned to Duff Man, and yelled at him, "You told me if I slept with you, I wouldn't have to touch the drunk!" Duff Man replied simply, "Duff Man says a lot of things, oh yeah!" Titania stormed off and forfeited the contest.