Continuity mistake: When the girls go find Megan crying after the first traumatic office encounter with Brigitte, her toenails are a natural pink. Moments later in the break room (and the rest of the game) they have the same black varnish as her fingernails.
Character mistake: During Megan's first humiliation scene, she internally monologues saying "I can't believe it, he's offering me a promotion." The problem is that the "he" she refers to is Brigitte.
Other mistake: In Abby's scene when she is required to bring refreshments to the meeting room, all the drama happens because there's a chair blocking her way to the left of the table. Any sane person would just walk to the right of the table. She has all the space in the world to do that, but the plot to work she appears to be unironically too stupid to even consider the possibility. She also has room to put the tray down without moving a step. (also, as a bonus, the hand of one of the guests is embedded inside the table, just the thumb sticking out).
Other mistake: When Mr. Bianchetti gives the approval to Brigitte's plan, he replies "can be done", with no capitalization (it's like a line or a few words are missing).
Other mistake: The scenes inside Brigitte's office happen in the span of 10 days, but the clothes on the floor remain the same throughout them.
Character mistake: During a sarcastic comment in the final days, Linda mentions "an action figure of Dr. Manhattan, a naked patch for the sims", with no capitalization - she meant The Sims, as in the game.
Revealing mistake: Several times during the game the name of the person saying a line followed by a colon (so, the basic formatting of the script) appears in the actual line of dialogue, sometimes together with the proper name field, other times with no name field at all.
Character mistake: During the intro, in one line of dialogue Brigitte's name loses the B.