Often, people cling to jobs that no longer satisfy them—or that they actively dislike—but resist leaving due to fear of losing everything they’ve invested to reach this point: time, effort, or training.
Although it may seem strange, this behavior stems from a psychological bias known as sunk cost fallacy . This bias can inhibit decision-making when it’s time to leave a job, causing people to remain in unsuitable employment situations that can even have adverse effects on their mental health .
What is the Sunk Cost Fallacy?
Psychologists Amos Tversky and Daniel Kahneman from the Hebrew University of Jerusalem first coined this term in 1972. Their groundbreaking research laid the foundation for understanding cognitive biases, demonstrating how this particular bias impacts both business and personal decision-making. Many individuals find themselves caught in a cycle of stagnation due to this fallacy.
<img alt="Artificial Intelligence helps us make difficult decisions, but we tend to allow (and prefer) to decide for us" width="375" height="142" src="https://i.blogs.es/d9d1d5/decision/375_142.jpg"/>Richard Thaler also contributed to the understanding of the sunk cost fallacy , showing that individuals are prone to utilizing a good or service more when they’ve made a prior investment in it. According to research from the University of Ohio , this fallacy points to a tendency among people to continue with an activity because they’ve already invested resources in it—even when those resources are unrecoverable. Logically, it would make sense to abandon that course of action.
In professional settings, succumbing to this fallacy means that individuals might postpone their decision to change jobs indefinitely, solely because they don’t want to “lose” what they’ve worked hard to achieve in their current position.

The Bias in Important Decisions
This cognitive distortion causes many to become stagnant in roles that no longer motivate them, even when evidence suggests better options are available. Loss aversion is a key psychological factor; individuals often feel a heightened responsibility for resources already invested, leading to the fear of being perceived as wasteful by others if they choose to leave.
Research indicates that even when a change would clearly benefit an individual, the fear of acknowledging previously sunk costs leads to a delay in action. This mental paralysis is driven by the psychological burden of feeling that all past efforts would be rendered worthless if they decide to move on .

Trapped in Their Own Trap
A study by researchers at the University of Kansas with over 1,000 participants highlighted that those who succumb to the sunk cost fallacy experience heightened symptoms of anxiety and often postpone seeking professional help. Another study from the University of California in San Diego emphasized that investing unrecoverable resources doesn’t necessitate sticking with a failing proposition. “Sinking with the ship is unnecessary,” the researchers observed.
Scientific evidence suggests that to make better decisions, it is essential to identify this cognitive bias and to rely on objective data and future possibilities instead of past investments. Recognizing the sunk cost fallacy is crucial for overcoming it in job-related decisions. Ignorance of this bias risks continued resource investment in unproductive situations, creating a vicious cycle that becomes harder to escape.
As emphasized by Asana, it’s vital not to succumb to immobility . Decision-making should be anchored in objective evaluations and perspectives, focusing on future gains instead of past costs. By overcoming the sunk cost fallacy, individuals pave the way for better opportunities and enhanced professional satisfaction.
