Why do people do PostDocs? Isn't a PhD enough?

Postdocs come in two very different forms: one is a stepping-stone to genuine independence funded by universities, and the other is often paid research labor under someone else’s grant. That split helps explain why many people pursue postdoctoral roles even when a PhD feels like it should be enough—and why some end up stuck in a “treadmill” rather than building a career.

In the independence model, universities fund a small cohort of early-career researchers with money earmarked for new academic talent. The postdoc holder proposes and steers their own research agenda, with approval focused on the proposal rather than day-to-day direction. The appeal is straightforward: a PhD typically leaves researchers doing work tightly linked to a supervisor’s priorities, so a postdoc can provide the freedom to pursue personal research interests.

The second model is more common in practice and can be more precarious. Here, a principal investigator with existing funding hires postdocs to deliver components of a larger project. Postdocs become a relatively inexpensive way to staff research delivery—managing experiments, coordinating parts of the work, and handling execution—rather than pursuing an independent agenda. Many people who start in this setup still aim to transition into the independence track, but escaping the cycle is hard when each year depends on the next contract and the next grant-funded need.

Beyond funding structures, the transcript points to psychology and economics as major drivers. Some PhD graduates do postdocs because they fear being seen as a failure if they don’t keep moving toward an academic job. Outsiders often don’t understand what a postdoc is, and within academia the “next step” narrative can be powerful. Hope—of landing a tenure-track role, of becoming one of the lucky breakthrough cases—keeps people in the system, even as that hope can erode over time. Luck also matters, and the combination of competition, financial strain, and uncertainty can make postdocs feel like the easiest available bridge.

Desperation can be practical, too: postdocs can offer income without the same hiring gauntlet faced in industry, including multiple interviews and assessments. The transcript also highlights a more positive reason: postdocs can be a structured way to travel and reset. Historically, many researchers went abroad for postdoctoral work—Germany, the United States, and then returned home with a stronger reputation. While that “abroad prestige” has softened for some generations, international placements still offer motivation, exposure to different research cultures, and a chance to break institutional routines. Contracts are often short enough to treat the move as temporary—two years here, one year there—rather than a permanent relocation.

Finally, the transcript argues that a PhD doesn’t fully prepare people for modern research’s operational reality. Contemporary research involves grant planning, budgets, paperwork, and hiring staff—tasks that can feel like a baptism by fire. In that sense, postdocs can function as training for the administrative and managerial side of research, offering a taste of what academic work actually demands. The key caveat: the role can be rewarding, but it’s important to leave when the next career step is ready—whether that’s academia or industry.