What is a postdoc, and why is academia so precarious?
A postdoctoral researcher is someone with a doctorate employed on a fixed-term research contract — and the structural reason the position is precarious is straightforward arithmetic that nobody designed deliberately.
What a postdoc does. Conducts research, usually on a funded project led by a principal investigator, typically on a contract of one to three years. Publishes, applies for funding, and frequently supervises doctoral students and teaches.
The arithmetic that creates the problem. A single academic, over a career, supervises many doctoral students. If each of them requires a permanent academic post, the number of posts must grow continuously — and it does not. The number of PhDs awarded vastly exceeds the number of permanent positions available, and this is not a temporary imbalance but a structural feature of how the system reproduces itself.
The consequence is a large pool of qualified people competing for a small number of permanent posts, which depresses conditions for everyone in the pool.
What that produces in practice:
Serial fixed-term contracts, frequently many in succession, sometimes into a researcher's forties.
Geographic instability, since the next post is wherever funding exists, which is extremely difficult for anyone with a partner's career or caring responsibilities.
Funding-dependent employment, so a grant ending means a job ending regardless of performance.
Unpaid work between contracts, and periods of no income.
Casualised teaching, paid by the hour with preparation frequently unpaid — an area of sustained industrial dispute in UK higher education.
Delayed life decisions, which is consistently reported in surveys of researchers.
Why people accept it: the work is genuinely interesting, the alternative feels like abandoning years of specialist training, and each contract carries the possibility that the next step will be permanent.
What has been tried: open-ended contracts contingent on funding; fellowship schemes providing several years of independence; the UK Concordat to Support the Career Development of Researchers; and explicit acknowledgement that most doctoral graduates will work outside academia, with training adjusted accordingly.
The honest advice given increasingly openly by supervisors is to plan for a career outside academia as the expected outcome, not the fallback.