diff --git a/src/components/OwnSupportModal.jsx b/src/components/OwnSupportModal.jsx
new file mode 100644
index 0000000..3be0aa3
--- /dev/null
+++ b/src/components/OwnSupportModal.jsx
@@ -0,0 +1,80 @@
+import { useState } from 'react'
+import { FaTimes } from 'react-icons/fa'
+import { parseSupporters, supportMinutes } from '../lib/support'
+import { stepLabel } from '../lib/timeSteps'
+
+/* "Ich habe unterstuetzt": die eigene Unterstuetzung bei einem fremden Arbeitsblatt
+   eintragen, aendern oder entfernen. Andere Eintraege und die Zeiten bleiben unberuehrt. */
+export default function OwnSupportModal({ worksheet, currentUserId, onClose, onSave }) {
+  const existing = parseSupporters(worksheet.supporters).find((s) => s.employeeId === currentUserId)
+  const [task, setTask] = useState(existing?.task || '')
+  const [saving, setSaving] = useState(false)
+  const [error, setError] = useState('')
+
+  const save = async (value) => {
+    setSaving(true)
+    setError('')
+    const result = await onSave(worksheet, value)
+    if (result?.success) {
+      onClose()
+      return
+    }
+    setError(result?.error || 'Speichern fehlgeschlagen')
+    setSaving(false)
+  }
+
+  const handleSubmit = (e) => {
+    e.preventDefault()
+    if (!task.trim()) {
+      setError('Bitte angeben, wobei du unterstützt hast.')
+      return
+    }
+    save(task.trim())
+  }
+
+  return (
+    <div className="overlay">
+      <span className="overlay-close" onClick={onClose}>
+        <FaTimes />
+      </span>
+      <div className="overlay-content" style={{ maxWidth: 480 }}>
+        <h2 className="mb-2">Unterstützung eintragen</h2>
+        <p className="text-grey" style={{ fontSize: '14px', marginBottom: '16px' }}>
+          WSID {worksheet.wsid} · {worksheet.employeeName}
+          <br />Dir werden {stepLabel(supportMinutes(worksheet.totalTime))} angerechnet.
+        </p>
+
+        {error && (
+          <div className="bg-red text-white p-2 mb-2" style={{ borderRadius: '4px' }}>
+            {error}
+          </div>
+        )}
+
+        <form onSubmit={handleSubmit}>
+          <div className="form-group">
+            <label className="form-label" htmlFor="own-support-task">Wobei?</label>
+            <input
+              id="own-support-task"
+              className="form-control"
+              maxLength={200}
+              required
+              value={task}
+              onChange={(e) => setTask(e.target.value)}
+              autoFocus
+            />
+          </div>
+          <div className="text-center mt-2 flex gap-2" style={{ justifyContent: 'center' }}>
+            <button type="submit" className="btn btn-dark" disabled={saving}>
+              {saving ? 'Speichert...' : 'Speichern'}
+            </button>
+            {existing && (
+              <button type="button" className="btn" disabled={saving} onClick={() => save(null)}>
+                Eintrag entfernen
+              </button>
+            )}
+          </div>
+        </form>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/TicketCard.jsx b/src/components/TicketCard.jsx
index 072e829..e479095 100644
--- a/src/components/TicketCard.jsx
+++ b/src/components/TicketCard.jsx
@@ -8,6 +8,7 @@ import EditorDropdown from './EditorDropdown'
 import CreateWorksheetModal from './CreateWorksheetModal'
 import WorksheetList from './WorksheetList'
 import WorksheetTimesModal from './WorksheetTimesModal'
+import OwnSupportModal from './OwnSupportModal'
 import WorksheetSummary from './WorksheetSummary'
 import TicketProjects from './TicketProjects'
 import ProjectContextPanel from './ProjectContextPanel'
@@ -20,6 +21,7 @@ import { useCustomerAbo } from '../hooks/useCustomerAbo'
 import { useAuth } from '../context/AuthContext'
 import { databases, DATABASE_ID, COLLECTIONS } from '../lib/appwrite'
 import { canEditWorksheetTimes } from '../lib/ticketForm'
+import { canAddOwnSupport } from '../lib/support'
 import { ticketTypeLabel } from '../lib/ticketStatus'
 
 // Projekt / Preview steht mit im Details-Reiter
@@ -35,13 +37,14 @@ export default function TicketCard({ ticket, onUpdate }) {
   const [activeTab, setActiveTab] = useState('details')
   const [showCreateWorksheet, setShowCreateWorksheet] = useState(false)
   const [editTimesWorksheet, setEditTimesWorksheet] = useState(null)
+  const [ownSupportWorksheet, setOwnSupportWorksheet] = useState(null)
   // Abo-Stundenkonto gibt es nur bei Wartungs-Abo; erst laden, wenn Arbeitsblaetter gebraucht werden
   const { hoursAllowed: aboHoursAllowed } = useCustomerAbo(
     ticket.customerId,
     (expanded && activeTab === 'worksheets') || showCreateWorksheet
   )
 
-  const { worksheets, loading: worksheetsLoading, createWorksheet, updateWorksheet, updateWorksheetTimes, getTotalTime } = useWorksheets(
+  const { worksheets, loading: worksheetsLoading, createWorksheet, updateWorksheet, updateWorksheetTimes, saveOwnSupport, getTotalTime } = useWorksheets(
     expanded ? ticket.woid : null
   )
 
@@ -144,6 +147,9 @@ export default function TicketCard({ ticket, onUpdate }) {
                   loading={worksheetsLoading}
                   canEditTimes={(ws) => canEditWorksheetTimes(ws, user, employee)}
                   onEditTimes={setEditTimesWorksheet}
+                  canAddSupport={(ws) => canAddOwnSupport(ws, user, employee)}
+                  onOwnSupport={setOwnSupportWorksheet}
+                  currentUserId={user?.$id}
                   onTogglePlan={handleTogglePlan}
                   aboHoursAllowed={aboHoursAllowed}
                 />
@@ -156,6 +162,14 @@ export default function TicketCard({ ticket, onUpdate }) {
       )}
 
       <CreateWorksheetModal isOpen={showCreateWorksheet} onClose={() => setShowCreateWorksheet(false)} workorder={ticket} onCreate={handleCreateWorksheet} aboHoursAllowed={aboHoursAllowed} />
+      {ownSupportWorksheet && (
+        <OwnSupportModal
+          worksheet={ownSupportWorksheet}
+          currentUserId={user?.$id}
+          onClose={() => setOwnSupportWorksheet(null)}
+          onSave={(ws, task) => saveOwnSupport(ws, task, user, employee)}
+        />
+      )}
       {editTimesWorksheet && (
         <WorksheetTimesModal
           worksheet={editTimesWorksheet}
diff --git a/src/components/WorksheetList.jsx b/src/components/WorksheetList.jsx
index 29f370e..7db90f5 100644
--- a/src/components/WorksheetList.jsx
+++ b/src/components/WorksheetList.jsx
@@ -1,7 +1,8 @@
 import { useState } from 'react'
-import { FaClock, FaUser, FaExchangeAlt, FaComment, FaChevronDown, FaChevronUp, FaPen, FaCheck } from 'react-icons/fa'
+import { FaClock, FaUser, FaExchangeAlt, FaComment, FaChevronDown, FaChevronUp, FaPen, FaCheck, FaHandsHelping } from 'react-icons/fa'
 import { serviceTypeLabel, needsTimeEntry, worksheetTone } from '../lib/ticketForm'
 import { statusLabel } from '../lib/ticketStatus'
+import { parseSupporters } from '../lib/support'
 
 // Kopffarbe je Zustand (worksheetTone): orange = Git-Zeit fehlt, gruen = Git-Zeit eingetragen
 const TONES = {
@@ -24,7 +25,7 @@ const headerButtonStyle = {
   marginRight: '8px',
 }
 
-export default function WorksheetList({ worksheets, totalTime, loading, onTogglePlan, aboHoursAllowed = true, canEditTimes, onEditTimes }) {
+export default function WorksheetList({ worksheets, totalTime, loading, onTogglePlan, aboHoursAllowed = true, canEditTimes, onEditTimes, canAddSupport, onOwnSupport, currentUserId }) {
   const [expandedWorksheets, setExpandedWorksheets] = useState({})
   if (loading) {
     return (
@@ -177,6 +178,23 @@ export default function WorksheetList({ worksheets, totalTime, loading, onToggle
                           : <><FaPen className="me-1" /> Zeiten bearbeiten</>}
                       </button>
                     )}
+                    {onOwnSupport && canAddSupport?.(ws) && (
+                      <button
+                        type="button"
+                        className="btn btn-sm"
+                        title="Eintragen, dass du bei dieser Arbeit unterstützt hast"
+                        style={headerButtonStyle}
+                        onClick={(e) => {
+                          e.stopPropagation()
+                          onOwnSupport(ws)
+                        }}
+                      >
+                        <FaHandsHelping className="me-1" />{' '}
+                        {parseSupporters(ws.supporters).some((s) => s.employeeId === currentUserId)
+                          ? 'Meine Unterstützung bearbeiten'
+                          : 'Ich habe unterstützt'}
+                      </button>
+                    )}
                     {onTogglePlan && !ws.isComment && Number(ws.totalTime) > 0 && (aboHoursAllowed || ws.countsToPlan) && (
                       <button
                         type="button"
diff --git a/src/hooks/useWorksheets.js b/src/hooks/useWorksheets.js
index bc2ad7f..0548228 100644
--- a/src/hooks/useWorksheets.js
+++ b/src/hooks/useWorksheets.js
@@ -2,7 +2,7 @@ import { useState, useEffect, useCallback } from 'react'
 import { databases, DATABASE_ID, COLLECTIONS, Query, ID } from '../lib/appwrite'
 import { canEditWorksheetTimes, isGitWorksheet } from '../lib/ticketForm'
 import { roundUpToStep, isValidStep } from '../lib/timeSteps'
-import { parseSupporters, serializeSupporters } from '../lib/support'
+import { parseSupporters, serializeSupporters, canAddOwnSupport, upsertSupporter, removeSupporter } from '../lib/support'
 
 const STEP_ERROR = 'Die Arbeitszeit muss in 15-Minuten-Schritten angegeben werden.'
 
@@ -258,6 +258,30 @@ export function useWorksheets(woid = null) {
     return updateWorksheet(worksheet.$id, data)
   }
 
+  /**
+   * "Ich habe unterstuetzt": eigenen Eintrag setzen (task) oder entfernen (task = null).
+   * Liest das Blatt frisch, damit gleichzeitige Eintraege anderer erhalten bleiben.
+   */
+  const saveOwnSupport = async (worksheet, task, currentUser, employee) => {
+    if (!canAddOwnSupport(worksheet, currentUser, employee)) {
+      return { success: false, error: 'Hier kannst du keine Unterstützung eintragen.' }
+    }
+    try {
+      const fresh = await databases.getDocument(DATABASE_ID, COLLECTIONS.WORKSHEETS, worksheet.$id)
+      const current = parseSupporters(fresh.supporters)
+      const next = task === null
+        ? removeSupporter(current, currentUser.$id)
+        : upsertSupporter(current, {
+          employeeId: currentUser.$id,
+          name: employee?.displayName || currentUser.name || '',
+          task: String(task).trim().slice(0, 200)
+        })
+      return updateWorksheet(worksheet.$id, { supporters: serializeSupporters(next) })
+    } catch (err) {
+      return { success: false, error: err.message }
+    }
+  }
+
   /**
    * Löscht ein Worksheet (sollte normalerweise nicht erlaubt sein - Audit Trail!)
    */
@@ -293,6 +317,7 @@ export function useWorksheets(woid = null) {
     createWorksheet,
     updateWorksheet,
     updateWorksheetTimes,
+    saveOwnSupport,
     deleteWorksheet,
     refresh: fetchWorksheets,
     getTotalTime,