I was fired from the keyboard factory yesterday. I wasn't putting in enough shifts.
Why this joke works
Two Kinds of Shift Work
The setup sounds like an ordinary factory dismissal, where failing to put in enough shifts means not working enough scheduled periods. A keyboard supplies the second meaning: Shift is a physical key, and manufacturing keyboards requires putting those keys into place. Deliver the first sentence like a disappointing career update. Then stress “shifts” only slightly. The factory detail does the real work, so an oversized wink or a long pause can make the wordplay feel more forced than it needs to.
A closer look
A Workplace Complaint Hides in Plain Sight
The opening sounds like a standard story about losing a manufacturing job. “Yesterday” adds conversational immediacy, while the passive phrase “was fired” encourages listeners to expect an ordinary performance problem. The second sentence delivers that problem in familiar workplace language. Only the keyboard setting turns the scheduled work periods into physical parts, producing a clean last-word reveal.
Fact behind the joke
QWERTY Began With Mechanical Typewriters
According to the Smithsonian, Christopher Latham Sholes developed the QWERTY arrangement during the 1870s, and Remington adopted it for a typewriter in 1873. The layout later carried over to computer keyboards and digital devices. Modern Shift keys therefore sit inside a letter arrangement whose roots reach back to nineteenth-century machinery.