diff --git a/android-app/app/src/test/java/com/dienstplan/nrw/PayrollCalculatorTest.kt b/android-app/app/src/test/java/com/dienstplan/nrw/PayrollCalculatorTest.kt
index 2403c0f..dbabf20 100644
--- a/android-app/app/src/test/java/com/dienstplan/nrw/PayrollCalculatorTest.kt
+++ b/android-app/app/src/test/java/com/dienstplan/nrw/PayrollCalculatorTest.kt
@@ -52,7 +52,7 @@ class PayrollCalculatorTest {
     
     /**
      * Test Case 2: Exactly at threshold (2.0 WE)
-     * Expected: WE payout = 450€ (1.0 unit after deduction), threshold reached
+     * Expected: WE payout = 0€ (0.0 units after deduction), threshold reached
      */
     @Test
     fun testExactlyAtThreshold() {
@@ -67,14 +67,14 @@ class PayrollCalculatorTest {
         val result = results[0]
         assertEquals(2.0, result.weTotal, 0.001)
         assertTrue(result.thresholdReached)
-        assertEquals(1.0, result.deductionTotal, 0.001)
-        assertEquals(1.0, result.wePaid, 0.001)
-        assertEquals(450.0, result.payoutWE, 0.001)
+        assertEquals(2.0, result.deductionTotal, 0.001)
+        assertEquals(0.0, result.wePaid, 0.001)
+        assertEquals(0.0, result.payoutWE, 0.001)
     }
     
     /**
      * Test Case 3: Over threshold (3.5 WE)
-     * Expected: WE payout = 1125€ (2.5 units after deduction)
+     * Expected: WE payout = 675€ (1.5 units after deduction)
      */
     @Test
     fun testOverThreshold() {
@@ -91,8 +91,8 @@ class PayrollCalculatorTest {
         val result = results[0]
         assertEquals(3.5, result.weTotal, 0.001)
         assertTrue(result.thresholdReached)
-        assertEquals(2.5, result.wePaid, 0.001)
-        assertEquals(1125.0, result.payoutWE, 0.001)
+        assertEquals(1.5, result.wePaid, 0.001)
+        assertEquals(675.0, result.payoutWE, 0.001)
     }
     
     /**
@@ -115,8 +115,8 @@ class PayrollCalculatorTest {
         assertEquals(0.4, result.weFriday, 0.001)
         assertEquals(1.6, result.weOther, 0.001)
         assertEquals(0.4, result.deductionFriday, 0.001)  // All Friday deducted first
-        assertEquals(0.6, result.deductionOther, 0.001)   // Rest from other
-        assertEquals(1.0, result.wePaid, 0.001)
+        assertEquals(1.6, result.deductionOther, 0.001)   // Rest from other (1.6 to reach 2.0 total)
+        assertEquals(0.0, result.wePaid, 0.001)
     }
     
     /**
@@ -147,8 +147,8 @@ class PayrollCalculatorTest {
         // B: above threshold
         assertTrue(resultB.thresholdReached)
         assertEquals(2.5, resultB.weTotal, 0.001)
-        assertEquals(1.5, resultB.wePaid, 0.001)
-        assertEquals(675.0, resultB.payoutWE, 0.001)
+        assertEquals(0.5, resultB.wePaid, 0.001)
+        assertEquals(225.0, resultB.payoutWE, 0.001)
     }
     
     private fun parseDate(dateString: String): Date {
diff --git a/test_deduction.py b/test_deduction.py
new file mode 100644
index 0000000..b09ecfc
--- /dev/null
+++ b/test_deduction.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python3
+"""
+Test script to verify the weekend deduction change from 1.0 to 2.0 units.
+"""
+
+from datetime import date
+import sys
+sys.path.insert(0, 'src')
+from calculate import calculate_verguetung
+
+# Test case 1: Exactly 2.0 WE units (threshold reached)
+# Expected: 2.0 WE - 2.0 deduction = 0.0 paid → 0€ for WE
+print("=" * 60)
+print("Test 1: Exactly 2.0 WE units (threshold reached)")
+print("=" * 60)
+
+holidays = set()
+plan_data = [
+    (date(2025, 11, 7), "Alice"),   # Friday (WE)
+    (date(2025, 11, 8), "Alice"),   # Saturday (WE)
+]
+
+results = calculate_verguetung(plan_data, holidays)
+alice = results[0]
+print(f"Employee: {alice['mitarbeiter']}")
+print(f"WE Friday: {alice['we_freitag']}")
+print(f"WE Other: {alice['we_andere']}")
+print(f"WE Total: {alice['we_gesamt']}")
+print(f"Threshold reached: {alice['schwelle_erreicht']}")
+print(f"WE paid: {alice['we_bezahlt']}")
+print(f"Payout WE: {alice['auszahlung_we']}€")
+print(f"Payout Total: {alice['auszahlung_gesamt']}€")
+
+if alice['we_gesamt'] == 2.0 and alice['we_bezahlt'] == 0.0 and alice['auszahlung_we'] == 0:
+    print("✅ PASS: Correctly deducts 2.0 WE units, resulting in 0€")
+else:
+    print(f"❌ FAIL: Expected 0€ for WE, got {alice['auszahlung_we']}€")
+
+# Test case 2: 3.0 WE units
+# Expected: 3.0 WE - 2.0 deduction = 1.0 paid → 450€
+print("\n" + "=" * 60)
+print("Test 2: 3.0 WE units")
+print("=" * 60)
+
+plan_data = [
+    (date(2025, 11, 7), "Bob"),   # Friday (WE)
+    (date(2025, 11, 8), "Bob"),   # Saturday (WE)
+    (date(2025, 11, 9), "Bob"),   # Sunday (WE)
+]
+
+results = calculate_verguetung(plan_data, holidays)
+bob = results[0]
+print(f"Employee: {bob['mitarbeiter']}")
+print(f"WE Friday: {bob['we_freitag']}")
+print(f"WE Other: {bob['we_andere']}")
+print(f"WE Total: {bob['we_gesamt']}")
+print(f"Threshold reached: {bob['schwelle_erreicht']}")
+print(f"WE paid: {bob['we_bezahlt']}")
+print(f"Payout WE: {bob['auszahlung_we']}€")
+print(f"Payout Total: {bob['auszahlung_gesamt']}€")
+
+if bob['we_gesamt'] == 3.0 and bob['we_bezahlt'] == 1.0 and bob['auszahlung_we'] == 450:
+    print("✅ PASS: Correctly deducts 2.0 WE units, resulting in 450€")
+else:
+    print(f"❌ FAIL: Expected 450€ for WE, got {bob['auszahlung_we']}€")
+
+# Test case 3: 1.0 WE unit (below threshold)
+# Expected: No payment (threshold not reached)
+print("\n" + "=" * 60)
+print("Test 3: 1.0 WE units (below threshold)")
+print("=" * 60)
+
+plan_data = [
+    (date(2025, 11, 8), "Charlie"),   # Saturday (WE)
+]
+
+results = calculate_verguetung(plan_data, holidays)
+charlie = results[0]
+print(f"Employee: {charlie['mitarbeiter']}")
+print(f"WE Total: {charlie['we_gesamt']}")
+print(f"Threshold reached: {charlie['schwelle_erreicht']}")
+print(f"WE paid: {charlie['we_bezahlt']}")
+print(f"Payout WE: {charlie['auszahlung_we']}€")
+print(f"Payout Total: {charlie['auszahlung_gesamt']}€")
+
+if charlie['we_gesamt'] == 1.0 and charlie['we_bezahlt'] == 0.0 and charlie['auszahlung_we'] == 0:
+    print("✅ PASS: Below threshold, no payment")
+else:
+    print(f"❌ FAIL: Expected 0€, got {charlie['auszahlung_we']}€")
+
+# Test case 4: Mixed WT and WE (2 WT + 2 WE)
+# Expected: WT always paid (500€), WE: 2.0 - 2.0 = 0 paid (0€), Total: 500€
+print("\n" + "=" * 60)
+print("Test 4: 2.0 WT + 2.0 WE units")
+print("=" * 60)
+
+plan_data = [
+    (date(2025, 11, 3), "Diana"),   # Monday (WT)
+    (date(2025, 11, 4), "Diana"),   # Tuesday (WT)
+    (date(2025, 11, 7), "Diana"),   # Friday (WE)
+    (date(2025, 11, 8), "Diana"),   # Saturday (WE)
+]
+
+results = calculate_verguetung(plan_data, holidays)
+diana = results[0]
+print(f"Employee: {diana['mitarbeiter']}")
+print(f"WT units: {diana['wt_einheiten']}")
+print(f"WE Total: {diana['we_gesamt']}")
+print(f"Threshold reached: {diana['schwelle_erreicht']}")
+print(f"WE paid: {diana['we_bezahlt']}")
+print(f"Payout WT: {diana['auszahlung_wt']}€")
+print(f"Payout WE: {diana['auszahlung_we']}€")
+print(f"Payout Total: {diana['auszahlung_gesamt']}€")
+
+if diana['wt_einheiten'] == 2.0 and diana['auszahlung_wt'] == 500 and diana['we_bezahlt'] == 0.0 and diana['auszahlung_we'] == 0 and diana['auszahlung_gesamt'] == 500:
+    print("✅ PASS: WT paid (500€), WE deducted completely (0€), Total: 500€")
+else:
+    print(f"❌ FAIL: Expected total 500€, got {diana['auszahlung_gesamt']}€")
+
+print("\n" + "=" * 60)
+print("Test Summary")
+print("=" * 60)
+print("All tests verify that the deduction is now 2.0 WE units (not 1.0)")
+print("This matches the business requirement from the issue.")
diff --git a/webapp/test-suite.js b/webapp/test-suite.js
index 4fff30b..03e85a9 100644
--- a/webapp/test-suite.js
+++ b/webapp/test-suite.js
@@ -204,9 +204,9 @@ runner.test('Berechnung: Genau 2.0 WE-Tage = 450€', (t) => {
 
     t.assertEqual(result.qualifyingDays, 2.0, 'Sollte 2.0 qualifizierende Tage haben');
     t.assertTrue(result.thresholdReached, 'Schwellenwert sollte erreicht sein');
-    t.assertEqual(result.qualifyingDaysDeducted, 1.0, 'Sollte 1.0 Tag abziehen');
-    t.assertEqual(result.qualifyingDaysPaid, 1.0, 'Sollte 1.0 Tag bezahlen');
-    t.assertEqual(result.totalBonus, 450, 'Bonus sollte 450€ sein');
+    t.assertEqual(result.qualifyingDaysDeducted, 2.0, 'Sollte 2.0 Tage abziehen');
+    t.assertEqual(result.qualifyingDaysPaid, 0.0, 'Sollte 0.0 Tage bezahlen');
+    t.assertEqual(result.totalBonus, 0, 'Bonus sollte 0€ sein');
 });
 
 runner.test('Berechnung: 2x halbe WE-Dienste = 0€ (genau Schwelle, aber nach Abzug nichts)', (t) => {
@@ -224,11 +224,11 @@ runner.test('Berechnung: 2x halbe WE-Dienste = 0€ (genau Schwelle, aber nach A
 
     t.assertEqual(result.qualifyingDays, 2.0, 'Sollte 2.0 qualifizierende Tage haben (4×0.5)');
     t.assertTrue(result.thresholdReached, 'Schwellenwert sollte erreicht sein');
-    t.assertEqual(result.qualifyingDaysPaid, 1.0, 'Sollte 1.0 Tag bezahlen nach Abzug');
-    t.assertEqual(result.totalBonus, 450, 'Bonus sollte 450€ sein');
+    t.assertEqual(result.qualifyingDaysPaid, 0.0, 'Sollte 0.0 Tage bezahlen nach Abzug');
+    t.assertEqual(result.totalBonus, 0, 'Bonus sollte 0€ sein');
 });
 
-runner.test('Berechnung: 3 WE-Tage = 900€', (t) => {
+runner.test('Berechnung: 3 WE-Tage = 450€', (t) => {
     const holidays = new HolidayProvider();
     const calculator = new BonusCalculator(holidays);
 
@@ -241,8 +241,8 @@ runner.test('Berechnung: 3 WE-Tage = 900€', (t) => {
     const result = calculator.calculateMonthlyBonus(duties);
 
     t.assertEqual(result.qualifyingDays, 3.0, 'Sollte 3.0 qualifizierende Tage haben');
-    t.assertEqual(result.qualifyingDaysPaid, 2.0, 'Sollte 2.0 Tage bezahlen (3-1)');
-    t.assertEqual(result.totalBonus, 900, 'Bonus sollte 900€ sein (2×450€)');
+    t.assertEqual(result.qualifyingDaysPaid, 1.0, 'Sollte 1.0 Tag bezahlen (3-2)');
+    t.assertEqual(result.totalBonus, 450, 'Bonus sollte 450€ sein (1×450€)');
 });
 
 runner.test('Berechnung: Normale Tage + WE-Tage gemischt', (t) => {
@@ -261,10 +261,10 @@ runner.test('Berechnung: Normale Tage + WE-Tage gemischt', (t) => {
     t.assertEqual(result.normalDays, 2.0, 'Sollte 2.0 normale Tage haben');
     t.assertEqual(result.qualifyingDays, 2.0, 'Sollte 2.0 qualifizierende Tage haben');
     t.assertEqual(result.normalDaysPaid, 2.0, 'Sollte 2.0 normale Tage bezahlen');
-    t.assertEqual(result.qualifyingDaysPaid, 1.0, 'Sollte 1.0 qualifizierenden Tag bezahlen');
+    t.assertEqual(result.qualifyingDaysPaid, 0.0, 'Sollte 0.0 qualifizierenden Tag bezahlen');
     t.assertEqual(result.bonusNormalDays, 500, 'Normale Tage: 2×250€ = 500€');
-    t.assertEqual(result.bonusQualifyingDays, 450, 'WE-Tage: 1×450€ = 450€');
-    t.assertEqual(result.totalBonus, 950, 'Gesamt: 950€');
+    t.assertEqual(result.bonusQualifyingDays, 0, 'WE-Tage: 0×450€ = 0€');
+    t.assertEqual(result.totalBonus, 500, 'Gesamt: 500€');
 });
 
 runner.test('Berechnung: Halbe Dienste korrekt berechnet', (t) => {
@@ -282,10 +282,10 @@ runner.test('Berechnung: Halbe Dienste korrekt berechnet', (t) => {
 
     t.assertEqual(result.normalDays, 0.5, 'Sollte 0.5 normale Tage haben');
     t.assertEqual(result.qualifyingDays, 2.5, 'Sollte 2.5 qualifizierende Tage haben');
-    t.assertEqual(result.qualifyingDaysPaid, 1.5, 'Sollte 1.5 qualifizierende Tage bezahlen');
+    t.assertEqual(result.qualifyingDaysPaid, 0.5, 'Sollte 0.5 qualifizierende Tage bezahlen');
     t.assertEqual(result.bonusNormalDays, 125, 'Normale Tage: 0.5×250€ = 125€');
-    t.assertEqual(result.bonusQualifyingDays, 675, 'WE-Tage: 1.5×450€ = 675€');
-    t.assertEqual(result.totalBonus, 800, 'Gesamt: 800€');
+    t.assertEqual(result.bonusQualifyingDays, 225, 'WE-Tage: 0.5×450€ = 225€');
+    t.assertEqual(result.totalBonus, 350, 'Gesamt: 350€');
 });
 
 runner.test('Berechnung: Feiertag + Vortag', (t) => {
@@ -301,7 +301,7 @@ runner.test('Berechnung: Feiertag + Vortag', (t) => {
 
     t.assertEqual(result.qualifyingDays, 2.0, 'Sollte 2.0 qualifizierende Tage haben');
     t.assertTrue(result.thresholdReached, 'Schwellenwert sollte erreicht sein');
-    t.assertEqual(result.totalBonus, 450, 'Bonus sollte 450€ sein');
+    t.assertEqual(result.totalBonus, 0, 'Bonus sollte 0€ sein');
 });
 
 runner.test('Berechnung: Keine Dienste = 0€', (t) => {