---
id: "contrarian-predictability-not-absolute"
type: "contrarian-insight"
source_timestamps: ["\\\"§ Rely on Data", "Not Intuition\\\""]
tags: ["predictability", "myth-busting"]
related: ["claim-uniform-policies-fail", "concept-scheduling-quality-dimensions"]
challenges: "The conventional wisdom that universally increasing schedule notice periods will proportionally decrease employee turnover across all locations."
sources: ["tail1"]
sourceVaultSlug: "hbr-seg-tail1"
originDay: 1
articleStem: "hbr-tail-111-service-worker-churn"
sourceUrl: "https://hbr.org/2026/03/the-solution-to-service-worker-churn"
sourceTitle: "The Solution to Service-Worker Churn"
---
# More advance notice does not universally guarantee lower turnover

**Challenges:** the conventional wisdom that universally increasing schedule notice periods will proportionally decrease employee turnover across all locations.

Conventional retail wisdom says scheduling further in advance (two to three weeks) is the best way to reduce churn. While broadly true, the data shows the relationship is **not absolute**: one retailer maintained monthly turnover **below 4%** with a **12-day** notice window, while **another retailer offering the exact same 12-day lead time lost nearly twice as many** employees.

Predictability is only **one** of the [[concept-scheduling-quality-dimensions|five dimensions]], and its impact varies by context. This is the flagship evidence for [[claim-uniform-policies-fail]] and directly rebuts the "more notice is good" rule of thumb named in [[quote-data-not-intuition]].