Definition
How much work a user must perform to correct or navigate system errors. This metric feeds directly into fair burden distribution.
Interpretation: UBR must be evaluated against the evidence burden ceiling (documentation) plus time/steps caps (process).
Targets & breach behavior. Measurement window: weekly median; monthly p95. Target / floor / ceiling: target ≤ 10 minutes, ≤ 5 steps, ≤ 2 documents; floor ≤ 15 minutes, ≤ 8 steps; ceiling 20 minutes / 10 steps. Owner: traceable ownership (required). Breach action: switch to burden inversion, offer staffed alternatives, or trigger safe pause. Public surface: receipt + time transparency + decision artifact showing burden caps.