What is pension auto-enrolment?
A UK system requiring employers to automatically put eligible staff into a workplace pension and contribute to it — with the employee opted in by default and free to leave.
Why it exists. Voluntary workplace pension participation was falling, and people consistently intended to save and did not. Auto-enrolment applies the behavioural finding that defaults dominate outcomes: making participation the default rather than the choice transformed take-up, and millions more people now save into a pension. It is among the more successful applications of behavioural policy anywhere.
Who is eligible. Broadly, workers who are aged 22 to state pension age, earn above an earnings trigger, and work ordinarily in the UK. Those below the thresholds can usually ask to join, and in some cases the employer must still contribute.
Contributions. A total minimum percentage of qualifying earnings, split between employer and employee, with tax relief forming part of the employee's share. The employer must pay at least a specified minimum. Check current rates and thresholds, which are reviewed.
The point that matters most: the employer contribution is part of your pay. Opting out does not give you that money — it forfeits it. For most people this makes opting out a straightforward loss, which is why the decision deserves more thought than it usually gets.
Opting out. You can, within a window after enrolment, and receive refunded contributions. Leave later and contributions stay invested until retirement. Employers must re-enrol eligible staff roughly every three years, precisely because opting out is frequently a decision people would revisit.
What employers must not do: encourage opting out, or screen candidates on whether they intend to. Both are prohibited.
Practical points:
You will accumulate multiple pots as you change jobs. Keeping track is the main practical burden, and lost pension pots are a substantial national problem.
The default fund is where most people's money sits. It is chosen to be broadly suitable, not optimal for you, and it is worth looking at.
Some employers match above the minimum, which is among the best-value things available to an employee and frequently unclaimed.
General information, not financial advice.