How Long Should You Stay in Your First Job Before Moving On?
A direct answer plus real UK scenarios for staying or leaving your first job: no progression, bad manager, low pay, poor training, or a toxic workplace.
By Tony Musso on
The short answer: aim for 18-24 months in your first job unless something is genuinely broken. Below 12 months, most UK employers see a pattern. Above 24 months in a role where you have stopped learning, you are actively slowing your own progression. The sweet spot is long enough to have real accomplishments, short enough to still be seen as promotable.
That said, "wait it out" is not the right answer if you dread every Monday, your manager is abusive, or you have not learned anything new in six months. The rule of thumb is a floor, not a ceiling.
The stay-or-leave decision table
| Signal | Stay | Leave | |---|:---:|:---:| | You are learning something new every quarter | ✅ | | | Your manager gives real, useful feedback | ✅ | | | You are picking up a marketable, portable skill | ✅ | | | You dread Sunday evenings every single week | | ✅ | | You have not been given new responsibility in 12+ months | | ✅ | | Your manager is abusive or the company culture is toxic | | ✅ | | You are being paid clearly below market for your role | | ✅ | | You just had a bad quarter but the trajectory is fine | ✅ | | | Peers who joined with you are being promoted, you are not | | ✅ |
If you tick three or more "leave" rows, the answer is probably to start looking now while staying in role.
Scenario 1: 6 months in - can I leave?
Legally, yes. Practically, only if the situation is genuinely bad (harassment, misrepresentation of the role, unsafe conditions) or you have a clearly better offer.
At 6 months you have not yet built the accomplishments that make a good CV story. Recruiters will ask "why did you leave so quickly?" and the answer needs to be about the role, not about you. If you can honestly say "the role turned out to be materially different from what was described", that is defensible. "I did not enjoy it" is not.
Better move: stay to 12 months while quietly interviewing.
Scenario 2: 12 months in - is now the right time?
At 12 months you have enough to show. You have shipped something, hit some target, or handled a real problem. That is a CV story.
The question at 12 months is not "can I leave?" but "am I still growing?". If yes, one more year usually pays off - a second-year promotion or salary bump is a stronger story than another job change. If no, start looking. The market rewards moving after 18-24 months, not after 12.
Scenario 3: 18 months in - the usual sweet spot
18-24 months is when the strongest signals stack:
- Enough time to have real, defensible accomplishments.
- Long enough that "job hopping" is not a concern.
- Short enough that you are still seen as high-growth, not a plateau hire.
- Long enough to have received one performance review cycle.
If you are getting promoted internally by 24 months, that is often as good as an external move. If you are not, external is usually the faster path.
Scenario 4: Past 24 months - the drift zone
Between 24 and 36 months, one of three things happens:
- You get promoted and your CV keeps building.
- You are actively learning and are happy to stay another year - fine.
- You are drifting - same role, same skills, same salary.
Option 3 is the dangerous one. It is comfortable, and it silently costs you 5-15% in compounded salary and skill growth every year. If you are here, the answer is to move, and the market usually pays best if you move at the 30-36 month mark.
What recruiters actually think
Recruiters look for tenure patterns, not single roles. One 8-month stint on a CV is fine, especially if explainable. Three 8-month stints in a row is a pattern that will show up on ATS screens.
They also look at direction. Someone who has stayed 18 months at each of three roles but has clearly grown in scope reads better than someone who stayed 3 years in one role and did the same thing the whole time.
If you are already miserable, [I hate my first job](/blog/i-hate-my-first-job-is-this-normal-and-what-to-do-next/) covers the emotional side - and normal discomfort vs red-flag signals - in more detail.
A simple decision rule
Ask yourself once a quarter: "Have I learned something in the last 90 days that I could not have learned by staying an extra week at my old job?"
- Yes, consistently: stay. You are growing.
- No, for two quarters running: start applying externally, keep working hard internally.
- No, for three quarters: leave.
Career development in your 20s and early 30s compounds. Twelve months in a role where you stopped growing costs you more than twelve months in a role where you are stretched.
For the wider "how do I decide what to do next?" question, [how to make career choices in your 20s](/blog/how-to-make-career-choices-in-your-20s/) and [career advice for 30s](/blog/career-advice-for-30s/) are the companion reads.