# Keyword decision — 3 Schicht System

**Post:** `lexikon/3-schicht-system`  
**Last Updated:** 2026-03-20

SISTRIX `related_keywords` for the primary **„3 schicht system“** are **not usable** (numeric „3“ associates with consumer products: Omega 3, AirPods 3, Vitamin D3, etc.). Secondaries are therefore **Manual** (SERP-informed HR/industrial terms). Primary metrics: `data/keywords-sistrix.json` → **550** search volume, difficulty **34** (after `--primary-only` refresh).

**Scope vs. inventory:** This post targets **„3-Schicht-System“** / **Dreischichtbetrieb** (three rotating teams, typically Früh–Spät–Nacht). The separate inventory term **„3 Schicht Modelle“** (`3_schicht_modelle`) is **not** merged here: that is a **catalogue / model types** angle; this URL is the **system definition** (teams, rotation, vs 4/5, legal touchpoints). **Schichtmodelle** remains the Oberbegriff.

**Scope vs. sibling:** [`lexikon/4-schicht-system`](v2/data/blog/posts/lexikon/4-schicht-system.json) already has a 3/4/5 comparison table; this post is the **authority for 3-Schicht-System** with a dedicated comparison H2 and reciprocal links.

## Mandatory decision table

| Keyword | Role (primary / secondary) | Source (SISTRIX metrics / SISTRIX ideas / GSC / Competitor / Manual) | Volume (or n/a) | Competition (or n/a) | Maps to (H2 / FAQ / intro) | Selected (Y/N) | Exception note |
|---------|----------------------------|-----------------------------------------------------------------------|-----------------|----------------------|----------------------------|----------------|----------------|
| 3 schicht system | primary | SISTRIX metrics (`keywords-sistrix.json`) | 550 | 34 | Intro, H2 Definition, FAQs | Y | |
| Dreischichtbetrieb | secondary | Manual | n/a | n/a | H2 Definition / Synonyme | Y | SISTRIX related list off-topic for „3“ |
| Früh Spät Nacht Schicht | secondary | Manual | n/a | n/a | H2 typische Schichten / Ablauf | Y | Same |
| Schichtmodelle | secondary | Manual | n/a | n/a | Link-out zu Oberbegriff, Tabelle | Y | Same |
| 4-Schicht-System | secondary | Manual | n/a | n/a | H2 Vergleich 3/4/5, Link | Y | Same |
| Wechselschicht | secondary | Manual | n/a | n/a | H2 Abgrenzung / Ruhezeiten | Y | Same |
| Nachtarbeit | secondary | Manual | n/a | n/a | H2 rechtliche Rahmenbedingungen, Link | Y | Same |
| 3 Schicht Modelle (inventory) | — | Competitor / Inventory | n/a | n/a | — | N | Eigenes Thema; nicht als primary |

## Notes

- Link to `data/keywords-sistrix.json` `last_updated` when you last refreshed SISTRIX: **2026-03-20** (primary-only first; full batch after `target-keywords.json`).

## Next steps

1. **GSC (2–4 Wochen nach Livegang):** Performance zu Primary **„3 schicht system“** und Secondaries aus der Tabelle prüfen; bei SERP-Drift Titel/Meta nur nach Abgleich mit `seo-meta.json` + `sync-meta-to-posts.php` anpassen.
2. **`3_schicht_modelle` (Inventory):** Nicht mit diesem Post zusammenlegen. Entweder **eigenständiger Artikel** oder Ausbau **Schichtmodelle** mit internem Link auf **3-Schicht-System** — Primary-Intent klar trennen.
3. **Review:** Jährliche Aktualisierung bei geänderten Tarif-/Branchenbeispielen (siehe Evergreen-Regeln).

See [KEYWORD_RESEARCH_WORKFLOW.md](../../KEYWORD_RESEARCH_WORKFLOW.md).