The first ninety days
A new role treated as a transition with its own work (learning, early wins, the relationships the role depends on). It has explicit outcomes at thirty, sixty and ninety days, a first real contribution, a named guide and written context.
Evidence grade: practice A widely adopted practitioner model with clear provenance.
Use it when
Every hire, scaled to seniority. For senior hires, most of the ninety days goes on integration.
Where it stops working
A plan is not a relationship. The framing fails without real support behind it, and when senior hires fail it is usually a failure of integration that no checklist would catch on its own.
Where the standard uses it
- PL-3Hiring and onboardingStructured evaluation, calibrated standards, assessing capability rather than tool access.
Sources
- Michael D. Watkins. The First 90 Days: Critical Success Strategies for New Leaders at All Levels. Harvard Business School Press, 2003. In the bibliography
Used alongside it
- Calibration practice
- Hiring as a system practice
- Structured interviews research
- The halo effect research
Cite this model
Chicago, BibTeX and licence →Engineering Management Academy. (2026). The first ninety days. In Engineering Management Academy Body of Knowledge (Version 3.1, TEC.first-ninety-days). https://www.engineeringmanagement.academy/body-of-knowledge/techniques/first-ninety-days