Why the first 90 days are critical
20% of employee turnover occurs in the first 45 days. Structured onboarding evaluation is the earliest and most impactful intervention for turnover prevention.
Research consistently shows that 20% of employee turnover occurs in the first 45 days. New employees who do not feel welcome, do not meet expectations or do not understand the company culture leave quickly. And the cost is high: all recruitment and onboarding investment is lost.
The problem is that most HR departments know little about the onboarding experience of new employees. They measure whether onboarding steps are completed, but they rarely ask how the experience feels. Administrative completeness is not the same as successful integration.
Onboarding evaluation fills this blind spot. By systematically measuring how new employees experience the first 90 days, you get the insights needed to improve the onboarding process and prevent early turnover.
The three measurement moments in onboarding
Day 7: first impression. Measure how the first working week was experienced. Does the employee have the necessary access and resources? Do they feel welcome in the team? Is the expectation of the role realistic? This is the moment to resolve practical onboarding issues quickly.
Day 30: integration evaluation. Measure how the first month went. Does the employee understand their role and responsibilities? Have they received sufficient support? Is the company culture as expected? This is the most critical measurement moment for early turnover risk.
Day 90: probation evaluation. Measure the onboarding experience in retrospect. Is the employee successfully integrated? Have they been able to deliver the expected value? Would they recommend the organisation as an employer? This is the most predictive measurement for long-term retention.
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What questions do you ask in onboarding evaluation?
The eNPS question ('How likely are you to recommend us as an employer?') is the most valuable single question. Combine this with an open follow-up: 'What is the main reason for your score?'
Add specific onboarding questions: 'How clear are your role and responsibilities?' and 'How well do you feel supported by your manager?' on a scale of 1-10. This gives you direct measurements of the most critical onboarding dimensions.
Also ask an open question: 'What could have gone better in your first month?' This gives qualitative insights that quantitative scores cannot provide.
Analysing onboarding data by cohort and manager
Employees who give an eNPS score of 9 or 10 after 30 days of onboarding have a 3x higher chance of still being with the organisation after 12 months than employees who give a score of 6 or lower.
Analyse onboarding evaluations by cohort: employees who started in the same month. So you see directly whether changes to the onboarding programme have improved or worsened the experience.
Segment by manager too. New employees who start with the same manager have similar onboarding experiences. If a specific manager consistently has lower onboarding scores, that is a signal for coaching or support.
Link onboarding scores to long-term retention. Employees who give an eNPS of 9 or 10 after 30 days have a significantly higher chance of still being with the organisation after 12 months. This makes onboarding eNPS a valuable predictor for your retention forecast.
Implementing automated onboarding evaluation
Link the survey trigger to your HRIS. When a new employee is registered, surveys are automatically scheduled for day 7, day 30 and day 90. No manual action required.
Set an alert for low scores on day 30. This is the most critical moment: a low score on day 30 is a strong signal for early turnover risk. The HR manager receives an immediate notification for proactive contact.
Analyse onboarding patterns monthly. Which aspects of onboarding consistently score lower? Which managers have the highest onboarding scores? Translate these insights into improvements to the onboarding programme.