Act One

As different members of the ensemble appear, we meet Violet, the working mother, and her son, Josh. The sexy country gal, Doralee, and her husband, Dwayne, are next. Finally, the new employee, Judy, introduces herself ("9 to 5").

We arrive at the Office Bullpen. Violet is introduced to Judy, and Judy reveals that her husband left her for a younger woman, which is why she doesn't have much work experience. Violet shows her the ropes and introduces her to the other women in the office, including Doralee ("Around Here"). Next, she introduces her to Franklin Hart. He is the epitome of a pompous, smarmy boss and immediately sends them off to fetch his coffee. Doralee comes in for dictation, but Hart begins an aggressive flirtation. She refuses his advances despite his numerous attempts to get her into compromising positions; he vows to have his way with her ("I'm Here for You"). The pursuit is abruptly interrupted by his wife, Missy.

In the Filing Room, Violet and the office gals are gossiping. Joe, a junior accountant, asks Violet out, but she rejects him. She believes she is too old. Back in the Xerox room, Judy is desperately trying to clean up a mess of papers everywhere, for which, Hart berates her. As Judy tries to hide the tears, it only becomes worse when her husband shows up to drop off divorce papers. Meanwhile, at Violet and Josh's home, Violet is fixing the garage door. Josh wants his mother to relax and gives her a doobie. At first, she refuses, but eventually has him put it inside her purse. Simultaneously, when Doralee complains to Dwayne that the girls at work treat her like an outcast, he reminds her that Texans are not quitters ("I Just Might").

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Back in the Bullpen, the secretaries are preparing to leave for lunch. Maria is convinced that the men make more money than the women, while Judy is getting overwhelmed by the phone bank. Doralee asks if anyone wants to grab lunch, but even Violet and Judy won't let her join their group. Lonely, she still feels misunderstood and judged ("Backwoods Barbie"). Doralee is then called into Hart's office to fix his chair and she learns that Hart has been saying he's sleeping with her, which is why the office has been shunning her. Roz comes in to tell him of Maria's attempt to find out salary information on the office employees. Hart wants to fire her, but Roz says that he cannot do so legally. An angry Hart leaves to fire her, himself. Overwhelmed and extremely impressed, Roz basks in her feelings for Hart ("Heart to Hart").

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Violet, Doralee, and Judy, who are upset by Maria's firing, meet at the elevators. With mixed emotions, the three decide to take a coffee break... but they end up in Violet's living room, smoking her son's doobie. The gals indulge, one at a time, each in her own fantasy of how to get revenge on Hart. Judy imagines a film-noir-style dance that ends with a stiletto in Hart's crotch ("Dance of Death"), Doralee imagines lassoing him and permanently branding him ("Cowgirl's Revenge") and Violet imagines brewing him a magic, poisonous concoction ("Potion Notion"). They revel in their victory ("Joy to the Girls").

The next day, in the coffee area, Violet is complaining to Joe about having to shop for rat poison and having to make Hart's coffee. They have a moment. During this, Violet mistakenly pours rat poison instead of sweetener into Hart's coffee. Hart comes in and makes a crack about Violet, and Joe almost manages to confront him. In the mix, Violet realizes her mistake and rushes to Judy and Doralee in the ladies' room. She tells them what she has done, and they agree to wait and see what happens. Roz overhears the entire exchange in a neighboring stall and she rushes to the elevator bank to tell Hart that he's been poisoned. Hart concocts a plan to hide while Roz tells the gals that he's been rushed to the hospital in critical condition.

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The gals arrive at the hospital, looking for Hart. They overhear a cop talking about a guy that's been killed by poison. They assume that it's Hart and try to find his body. Violet grabs a doctor's coat and impersonates a doctor, but they are unable to find him. They head back to the office to hide the evidence. Doralee goes into Hart's office to find his coffee cup, and Hart appears, scaring her. Hart attempts to blackmail her, threatening to call the cops. Fed up, Doralee hogties him with the phone cord, and the three decide to take him hostage in his own house ("Shine Like the Sun").

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Act Two

Back at the office, Roz is looking for Hart. She is concerned that he hasn't called her back. Violet realizes that they have to find a way to blackmail Hart in order to keep him quiet. They find that he has an extra set of company books, but they have to be able to prove he's legitimately stealing from the company. In the meantime, they decide to post some changes from Hart to boost employee morale and lighten up the office environment. When the changes go over so well, Judy and Doralee voice their feelings that Violet should be the permanent CEO of the company. She imagines what that would be like ("One of the Boys").

Next, in order to keep her from meddling, the gals send Roz off on a language immersion course in Denver. She is sent away for a month to learn French and she reflects on her love for Hart before departing ("5 to 9"). Once Roz leaves, the girls put more of their office changes into effect, including rehab for Margaret, daycare for the other ladies, and rehiring Maria. Over the course of the next few weeks, the whole office gets remade into a happier, more productive place ("Change It").

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At lunch, Joe remarks to Violet that someone else must be running the office since he's enjoying coming to work so much. Violet evades him, but she eventually tells Joe the truth of their ploy. Joe offers to help with the books, but he wants Violet to go out with him. She is still mourning her husband who died three years ago and isn't sure that she has the ability to love another man. He encourages her to open up to him ("Let Love Grow").

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Over at Hart's House, Judy is babysitting Hart. Her ex-husband, Dick, has followed her. He reveals that the relationship with his mistress was unsuccessful and he wants her back. Judy refuses and explains to him that she is not the same person she once was ("Get out and Stay Out").

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Later, Violet, Joe, and Doralee enter Hart's office to finalize their evidence against him, when he suddenly bursts in with Judy and Doralee's gun. He was able to escape and has now turned the tables on them. When the group attempts to blackmail him, he calls their bluff and prepares to contact the authorities. Before he can, Margaret enters to announce that the Chairman of the Board, Mr. Tinsworthy, is on his way up to the office. Tinsworthy arrives demanding to know who is responsible for the 20% increase in company productivity. Hart tries to tell him about being taken hostage but Violet wisely preempts him and comes clean. Tinsworthy, believing it is all a prank, dismisses the claims; he wants to send Hart to Bolivia for the opening of their next big operation and Violet will replace Hart as CEO of the company ("Finale").