Practice : Weighted Shortest Job First (WSJF)
Purpose and Strategic Importance
WSJF is a Lean prioritisation method that helps teams maximise economic value delivery by sequencing work based on cost of delay relative to job size.
It ensures resources are allocated to initiatives that deliver the most value fastest, aligning work to strategy.
Without WSJF, prioritisation risks being subjective, political, or focused on loudest voices.
Description of the Practice
- Each initiative is scored on business value, time criticality, and risk reduction/opportunity enablement.
- Scores are divided by job size (effort) to calculate WSJF.
- Items with higher WSJF are prioritised first.
How to Practise It (Playbook)
1. Getting Started
- Define scoring criteria collaboratively.
- Score initiatives in planning workshops.
- Rank and sequence based on WSJF scores.
2. Scaling and Maturing
- Apply WSJF consistently across portfolio planning.
- Automate scoring in backlog management tools.
- Use WSJF data to track portfolio alignment to strategy.
3. Team Behaviours to Encourage
- Objectivity in scoring.
- Transparency in criteria.
- Focus on value over volume.
4. Watch Out For…
- Inflating scores to justify favourites.
- Using WSJF rigidly without discussion.
- Overcomplicating scoring criteria.
5. Signals of Success
- Qualitative: Prioritisation conversations become evidence-driven.
- Quantitative: Increased throughput of high-value items.