Job Safety Analysis, JSA
Updated 2026-08-13
INTRODUCTION
English translation pending.
CORE DEFINITION
Job safety analysis proceeds in three moves: break the work down into concrete steps, identify the potential hazards in each step, then set control measures for each hazard found. Its model is systematic risk identification and control: thinking about risk at the level of the step is far more effective than a general instruction to be careful, because risk lives in specific actions rather than in the task as a whole.
SCAFFOLDING EFFECT
Reduce cognitive load
- Break it into steps: decompose the task before you look for risk in it. - Find the hazard per step: hunt at the step level where the risk actually lives. - Match controls by hierarchy: prefer elimination, then substitution, engineering, administrative, and personal protection last.
Anchor fast decisions
A hazard is attached to a specific action, so an instruction aimed at the whole task has no target to land on. Step-level decomposition puts each hazard in front of a specific control, and the control hierarchy ranks the options by how much of the hazard they actually remove rather than by how much they rely on the worker's vigilance.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Job_safety_analysisverified
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