# Keyword decision — 4 Schicht System

**Post:** `lexikon/4-schicht-system`  
**Last Updated:** 2026-03-20

SISTRIX `related_keywords` for the primary **„4 schicht system“** are **not usable** (numeric „4“ associates with consumer products: MacBook M4, iPhone 14, etc.). Secondaries are therefore **Manual** (SERP-informed HR/industrial terms). Primary metrics: `data/keywords-sistrix.json` → **800** search volume, difficulty **30** (after `--primary-only` refresh).

**Scope vs. inventory:** This post targets **„4 Schicht System“** / **Vierschicht** (rotating teams, continuous operation). The separate inventory term **„4 Schicht Modelle“** (`4_schicht_modelle`) is **not** merged here: use **Schichtmodelle** lexikon as Oberbegriff and avoid positioning this URL as the sole page for „alle 4-Schicht-Varianten“ beyond this system definition.

## 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 |
|---------|----------------------------|-----------------------------------------------------------------------|-----------------|----------------------|----------------------------|----------------|----------------|
| 4 schicht system | primary | SISTRIX metrics (`keywords-sistrix.json`) | 800 | 30 | Intro, H2 Definition, FAQs | Y | |
| Vierschichtbetrieb | secondary | Manual | n/a | n/a | H2 Abgrenzung / Synonyme | Y | SISTRIX related list off-topic for „4“ |
| 4x4 Schichtmodell | secondary | Manual | n/a | n/a | H2 gängige Muster | Y | Same |
| 5-Schicht-System | secondary | Manual | n/a | n/a | H2 Vergleich 3/4/5 | Y | Same |
| Panama Schichtmodell | secondary | Manual | n/a | n/a | H2 Beispiele (vorsichtig, tariflich) | Y | Same |
| Schichtmodelle | secondary | Manual | n/a | n/a | Link-out zu Oberbegriff, Tabelle | Y | Same |
| 4 Schicht Modelle (inventory) | — | Competitor / Inventory | n/a | n/a | — | N | Eigenes Thema / spätere URL; 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 **„4 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. **`4_schicht_modelle` (Inventory):** Nicht mit diesem Post zusammenlegen. Entweder **eigenständiger Artikel** (Varianten/Katalog) **oder** Ausbau **Schichtmodelle** mit internem Link auf **4-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).