diff --git a/src/router/index.ts b/src/router/index.ts
index 9ed413d..e40deeb 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -68,6 +68,11 @@ const router = createRouter({
           name: 'modules',
           component: () => import('@/views/ModulesView.vue'),
           meta: { roles: ['chef'] }
+        },
+        {
+          path: 'partnerships',
+          name: 'partnerships',
+          component: () => import('@/views/PartnershipsView.vue')
         }
       ]
     }
diff --git a/src/views/PartnershipsView.vue b/src/views/PartnershipsView.vue
new file mode 100644
index 0000000..1d37088
--- /dev/null
+++ b/src/views/PartnershipsView.vue
@@ -0,0 +1,456 @@
+<script setup lang="ts">
+import { ref, onMounted, computed } from 'vue'
+import { api } from '@/api'
+import { useAuthStore } from '@/stores/auth'
+
+const authStore = useAuthStore()
+
+const loading = ref(true)
+const partnerships = ref<any[]>([])
+const selectedPartnership = ref<any>(null)
+const showInviteModal = ref(false)
+const showDetailModal = ref(false)
+
+// Invite form
+const inviteSlug = ref('')
+const inviteNotes = ref('')
+const inviting = ref(false)
+const inviteError = ref('')
+
+// Detail data
+const partnershipDetail = ref<any>(null)
+const timesheets = ref<any[]>([])
+const billingData = ref<any>(null)
+const activeTab = ref<'orders' | 'timesheets' | 'billing'>('orders')
+
+onMounted(async () => {
+  await loadPartnerships()
+})
+
+async function loadPartnerships() {
+  loading.value = true
+  try {
+    const res = await api.get<{ partnerships: any[] }>('/partnerships')
+    partnerships.value = res.data.partnerships
+  } catch (e) {
+    console.error('Load partnerships failed:', e)
+  }
+  loading.value = false
+}
+
+async function inviteSubcontractor() {
+  if (!inviteSlug.value) return
+  
+  inviting.value = true
+  inviteError.value = ''
+  
+  try {
+    await api.post('/partnerships/invite', {
+      subcontractor_slug: inviteSlug.value,
+      notes: inviteNotes.value || undefined
+    })
+    showInviteModal.value = false
+    inviteSlug.value = ''
+    inviteNotes.value = ''
+    await loadPartnerships()
+  } catch (e) {
+    inviteError.value = e instanceof Error ? e.message : 'Einladung fehlgeschlagen'
+  }
+  inviting.value = false
+}
+
+async function respondToInvite(partnership: any, accept: boolean) {
+  try {
+    await api.post(`/partnerships/${partnership.id}/respond`, { accept })
+    await loadPartnerships()
+  } catch (e) {
+    alert('Fehler: ' + (e instanceof Error ? e.message : 'Unbekannt'))
+  }
+}
+
+async function viewPartnership(partnership: any) {
+  selectedPartnership.value = partnership
+  showDetailModal.value = true
+  activeTab.value = 'orders'
+  
+  try {
+    const [detailRes, tsRes, billingRes] = await Promise.all([
+      api.get<any>(`/partnerships/${partnership.id}`),
+      api.get<any>(`/partnerships/${partnership.id}/timesheets`),
+      api.get<any>(`/partnerships/${partnership.id}/billing`)
+    ])
+    
+    partnershipDetail.value = detailRes.data
+    timesheets.value = tsRes.data.timesheets
+    billingData.value = billingRes.data
+  } catch (e) {
+    console.error('Load detail failed:', e)
+  }
+}
+
+async function reviewTimesheet(ts: any, approve: boolean) {
+  if (!selectedPartnership.value) return
+  
+  try {
+    await api.post(`/partnerships/${selectedPartnership.value.id}/timesheets/${ts.id}/review`, {
+      approve,
+      dispute_reason: approve ? undefined : prompt('Grund für Beanstandung:')
+    })
+    // Reload
+    const tsRes = await api.get<any>(`/partnerships/${selectedPartnership.value.id}/timesheets`)
+    timesheets.value = tsRes.data.timesheets
+  } catch (e) {
+    alert('Fehler: ' + (e instanceof Error ? e.message : 'Unbekannt'))
+  }
+}
+
+const pendingInvites = computed(() => 
+  partnerships.value.filter(p => p.status === 'pending' && p.my_role === 'subcontractor')
+)
+
+const activePartnerships = computed(() =>
+  partnerships.value.filter(p => p.status === 'active')
+)
+
+function formatAmount(cents: number) {
+  return (cents / 100).toFixed(2).replace('.', ',') + ' €'
+}
+
+function formatDate(date: string) {
+  return new Date(date).toLocaleDateString('de-DE')
+}
+
+function getStatusBadge(status: string) {
+  const badges: Record<string, string> = {
+    pending: 'badge-warning',
+    active: 'badge-success',
+    paused: 'badge-secondary',
+    terminated: 'badge-danger',
+    requested: 'badge-primary',
+    accepted: 'badge-success',
+    declined: 'badge-danger',
+    approved: 'badge-success',
+    disputed: 'badge-danger'
+  }
+  return badges[status] || 'badge-secondary'
+}
+
+function getStatusLabel(status: string) {
+  const labels: Record<string, string> = {
+    pending: 'Ausstehend',
+    active: 'Aktiv',
+    paused: 'Pausiert',
+    terminated: 'Beendet',
+    requested: 'Angefragt',
+    accepted: 'Angenommen',
+    declined: 'Abgelehnt',
+    approved: 'Genehmigt',
+    disputed: 'Beanstandet'
+  }
+  return labels[status] || status
+}
+</script>
+
+<template>
+  <div class="space-y-6">
+    <!-- Header -->
+    <div class="flex items-center justify-between">
+      <div>
+        <h1 class="text-2xl font-bold text-gray-900 dark:text-white">
+          🤝 Subunternehmer
+        </h1>
+        <p class="text-gray-500 dark:text-gray-400">
+          Partnerschaften und Abrechnungen
+        </p>
+      </div>
+      <button 
+        v-if="authStore.isChef"
+        @click="showInviteModal = true" 
+        class="btn btn-primary"
+      >
+        + Subunternehmer einladen
+      </button>
+    </div>
+
+    <!-- Pending Invites -->
+    <div v-if="pendingInvites.length > 0" class="card bg-yellow-50 dark:bg-yellow-900/20 border-yellow-200">
+      <h2 class="text-lg font-semibold text-yellow-800 dark:text-yellow-200 mb-4">
+        📬 Offene Einladungen
+      </h2>
+      <div class="space-y-3">
+        <div 
+          v-for="p in pendingInvites" 
+          :key="p.id"
+          class="flex items-center justify-between p-4 bg-white dark:bg-gray-800 rounded-lg"
+        >
+          <div>
+            <span class="font-medium">{{ p.contractor_name }}</span>
+            <span class="text-gray-500"> möchte Sie als Subunternehmer</span>
+          </div>
+          <div class="flex gap-2">
+            <button @click="respondToInvite(p, true)" class="btn btn-success text-sm">
+              Annehmen
+            </button>
+            <button @click="respondToInvite(p, false)" class="btn btn-danger text-sm">
+              Ablehnen
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Loading -->
+    <div v-if="loading" class="text-center py-12 text-gray-500">
+      Lädt...
+    </div>
+
+    <!-- No Partnerships -->
+    <div v-else-if="activePartnerships.length === 0" class="card text-center py-12">
+      <span class="text-4xl">🤝</span>
+      <p class="mt-4 text-gray-500">Noch keine aktiven Partnerschaften</p>
+      <button 
+        v-if="authStore.isChef"
+        @click="showInviteModal = true" 
+        class="btn btn-primary mt-4"
+      >
+        Subunternehmer einladen
+      </button>
+    </div>
+
+    <!-- Partnerships Grid -->
+    <div v-else class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+      <div 
+        v-for="p in activePartnerships" 
+        :key="p.id"
+        class="card hover:shadow-lg transition-shadow cursor-pointer"
+        @click="viewPartnership(p)"
+      >
+        <div class="flex items-start justify-between">
+          <div>
+            <span class="text-xs text-gray-500">
+              {{ p.my_role === 'contractor' ? 'Subunternehmer' : 'Hauptunternehmer' }}
+            </span>
+            <h3 class="font-semibold text-gray-900 dark:text-white">
+              {{ p.my_role === 'contractor' ? p.subcontractor_name : p.contractor_name }}
+            </h3>
+          </div>
+          <span :class="['badge', getStatusBadge(p.status)]">
+            {{ getStatusLabel(p.status) }}
+          </span>
+        </div>
+        
+        <div class="mt-4 flex items-center gap-4 text-sm text-gray-500">
+          <span>📋 {{ p.shared_orders_count }} Aufträge</span>
+          <span>💰 {{ p.rates_count }} Sätze</span>
+        </div>
+      </div>
+    </div>
+
+    <!-- Invite Modal -->
+    <div v-if="showInviteModal" class="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
+      <div class="bg-white dark:bg-gray-800 rounded-xl shadow-xl max-w-md w-full p-6">
+        <h2 class="text-xl font-bold text-gray-900 dark:text-white mb-4">
+          Subunternehmer einladen
+        </h2>
+        
+        <div class="space-y-4">
+          <div>
+            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+              Organisation (Kürzel)
+            </label>
+            <input 
+              v-model="inviteSlug"
+              type="text"
+              class="input"
+              placeholder="z.B. muster-security"
+            />
+            <p class="mt-1 text-xs text-gray-500">
+              Das Kürzel, mit dem sich die Organisation registriert hat
+            </p>
+          </div>
+          
+          <div>
+            <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+              Notizen (optional)
+            </label>
+            <textarea 
+              v-model="inviteNotes"
+              class="input"
+              rows="2"
+              placeholder="z.B. Rahmenvertrag vom 01.01.2026"
+            ></textarea>
+          </div>
+          
+          <div v-if="inviteError" class="p-3 bg-red-50 text-red-600 rounded-lg text-sm">
+            {{ inviteError }}
+          </div>
+        </div>
+        
+        <div class="mt-6 flex justify-end gap-3">
+          <button @click="showInviteModal = false" class="btn btn-secondary">
+            Abbrechen
+          </button>
+          <button 
+            @click="inviteSubcontractor"
+            :disabled="inviting || !inviteSlug"
+            class="btn btn-primary"
+          >
+            {{ inviting ? 'Lädt...' : 'Einladen' }}
+          </button>
+        </div>
+      </div>
+    </div>
+
+    <!-- Detail Modal -->
+    <div v-if="showDetailModal && selectedPartnership" class="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
+      <div class="bg-white dark:bg-gray-800 rounded-xl shadow-xl max-w-4xl w-full max-h-[90vh] overflow-hidden flex flex-col">
+        <!-- Header -->
+        <div class="p-6 border-b dark:border-gray-700">
+          <div class="flex items-center justify-between">
+            <div>
+              <span class="text-xs text-gray-500">
+                {{ selectedPartnership.my_role === 'contractor' ? 'Subunternehmer' : 'Hauptunternehmer' }}
+              </span>
+              <h2 class="text-xl font-bold text-gray-900 dark:text-white">
+                {{ selectedPartnership.my_role === 'contractor' 
+                   ? selectedPartnership.subcontractor_name 
+                   : selectedPartnership.contractor_name }}
+              </h2>
+            </div>
+            <button @click="showDetailModal = false" class="text-gray-400 hover:text-gray-600 text-2xl">
+              ×
+            </button>
+          </div>
+          
+          <!-- Tabs -->
+          <div class="flex gap-4 mt-4">
+            <button 
+              @click="activeTab = 'orders'"
+              :class="['px-4 py-2 rounded-lg', activeTab === 'orders' ? 'bg-primary-100 text-primary-700' : 'text-gray-500']"
+            >
+              📋 Aufträge
+            </button>
+            <button 
+              @click="activeTab = 'timesheets'"
+              :class="['px-4 py-2 rounded-lg', activeTab === 'timesheets' ? 'bg-primary-100 text-primary-700' : 'text-gray-500']"
+            >
+              ⏱️ Stundenzettel
+            </button>
+            <button 
+              @click="activeTab = 'billing'"
+              :class="['px-4 py-2 rounded-lg', activeTab === 'billing' ? 'bg-primary-100 text-primary-700' : 'text-gray-500']"
+            >
+              💰 Abrechnung
+            </button>
+          </div>
+        </div>
+        
+        <!-- Content -->
+        <div class="p-6 overflow-y-auto flex-1">
+          <!-- Orders Tab -->
+          <div v-if="activeTab === 'orders'">
+            <div v-if="partnershipDetail?.recentOrders?.length" class="space-y-3">
+              <div 
+                v-for="order in partnershipDetail.recentOrders" 
+                :key="order.id"
+                class="p-4 bg-gray-50 dark:bg-gray-700 rounded-lg"
+              >
+                <div class="flex items-center justify-between">
+                  <div>
+                    <span class="font-medium">{{ order.order_title }}</span>
+                    <div class="text-sm text-gray-500">
+                      {{ order.start_time ? formatDate(order.start_time) : 'Kein Datum' }}
+                    </div>
+                  </div>
+                  <span :class="['badge', getStatusBadge(order.status)]">
+                    {{ getStatusLabel(order.status) }}
+                  </span>
+                </div>
+              </div>
+            </div>
+            <div v-else class="text-center text-gray-500 py-8">
+              Keine geteilten Aufträge
+            </div>
+          </div>
+          
+          <!-- Timesheets Tab -->
+          <div v-if="activeTab === 'timesheets'">
+            <div v-if="timesheets.length" class="space-y-3">
+              <div 
+                v-for="ts in timesheets" 
+                :key="ts.id"
+                class="p-4 bg-gray-50 dark:bg-gray-700 rounded-lg"
+              >
+                <div class="flex items-center justify-between">
+                  <div>
+                    <span class="font-medium">{{ ts.worker_name }}</span>
+                    <div class="text-sm text-gray-500">
+                      {{ formatDate(ts.work_date) }} • {{ ts.hours_worked }}h • {{ ts.order_title }}
+                    </div>
+                    <div v-if="ts.calculated_amount_cents" class="text-sm font-medium text-green-600">
+                      {{ formatAmount(ts.calculated_amount_cents) }}
+                    </div>
+                  </div>
+                  <div class="flex items-center gap-2">
+                    <span :class="['badge', getStatusBadge(ts.approval_status)]">
+                      {{ getStatusLabel(ts.approval_status) }}
+                    </span>
+                    <template v-if="selectedPartnership.my_role === 'contractor' && ts.approval_status === 'pending'">
+                      <button @click="reviewTimesheet(ts, true)" class="btn btn-success text-xs">✓</button>
+                      <button @click="reviewTimesheet(ts, false)" class="btn btn-danger text-xs">✗</button>
+                    </template>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div v-else class="text-center text-gray-500 py-8">
+              Keine Stundenzettel
+            </div>
+          </div>
+          
+          <!-- Billing Tab -->
+          <div v-if="activeTab === 'billing' && billingData">
+            <div class="grid grid-cols-3 gap-4 mb-6">
+              <div class="p-4 bg-yellow-50 dark:bg-yellow-900/20 rounded-lg text-center">
+                <div class="text-2xl font-bold text-yellow-600">
+                  {{ billingData.summary.pending.amount.toFixed(2) }} €
+                </div>
+                <div class="text-sm text-yellow-600">{{ billingData.summary.pending.count }} ausstehend</div>
+              </div>
+              <div class="p-4 bg-green-50 dark:bg-green-900/20 rounded-lg text-center">
+                <div class="text-2xl font-bold text-green-600">
+                  {{ billingData.summary.approved.amount.toFixed(2) }} €
+                </div>
+                <div class="text-sm text-green-600">{{ billingData.summary.approved.count }} genehmigt</div>
+              </div>
+              <div class="p-4 bg-blue-50 dark:bg-blue-900/20 rounded-lg text-center">
+                <div class="text-2xl font-bold text-blue-600">
+                  {{ billingData.summary.approved.hours.toFixed(1) }} h
+                </div>
+                <div class="text-sm text-blue-600">Gesamt-Stunden</div>
+              </div>
+            </div>
+            
+            <h3 class="font-semibold text-gray-900 dark:text-white mb-3">Nach Stundensatz</h3>
+            <div class="space-y-2">
+              <div 
+                v-for="rate in billingData.byRate" 
+                :key="rate.rate_name"
+                class="flex items-center justify-between p-3 bg-gray-50 dark:bg-gray-700 rounded-lg"
+              >
+                <div>
+                  <span class="font-medium">{{ rate.rate_name || 'Standard' }}</span>
+                  <span class="text-gray-500 ml-2">{{ rate.rate_amount?.toFixed(2) }} €/h</span>
+                </div>
+                <div class="text-right">
+                  <div class="font-medium">{{ rate.total_amount?.toFixed(2) }} €</div>
+                  <div class="text-sm text-gray-500">{{ rate.total_hours?.toFixed(1) }}h</div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>