diff --git a/personio-headcount/data/department_mapping.json b/personio-headcount/data/department_mapping.json
new file mode 100644
index 0000000..2db59f6
--- /dev/null
+++ b/personio-headcount/data/department_mapping.json
@@ -0,0 +1,101 @@
+{
+  "total_departments": 12,
+  "departments": [
+    {
+      "department_id": "10098903",
+      "department_name": "All Gifts",
+      "active_headcount": 1,
+      "total_records": 2,
+      "team_ids": ["4811949"],
+      "teams": ["Strategic Operations"]
+    },
+    {
+      "department_id": "1156004",
+      "department_name": "Customer Experience",
+      "active_headcount": 13,
+      "total_records": 14,
+      "team_ids": ["492417", "492421", "784205"],
+      "teams": ["Customer Experience", "Customer Experience", "Customer Experience"]
+    },
+    {
+      "department_id": "3442690",
+      "department_name": "Data Management",
+      "active_headcount": 1,
+      "total_records": 1,
+      "team_ids": ["3442690"],
+      "teams": ["Data Management"]
+    },
+    {
+      "department_id": "1291053",
+      "department_name": "Engineering & Data",
+      "active_headcount": 6,
+      "total_records": 10,
+      "team_ids": ["417184", "3442693"],
+      "teams": ["Data", "Engineering"]
+    },
+    {
+      "department_id": "1291054",
+      "department_name": "Finance & Business Navigation",
+      "active_headcount": 11,
+      "total_records": 45,
+      "team_ids": ["417186", "417184", "3442693", "3443053", "572110"],
+      "teams": ["Data", "Finance & Administration", "M&A", "Pricing", "Rev Ops"]
+    },
+    {
+      "department_id": "7432065",
+      "department_name": "Fulfillment & Operations",
+      "active_headcount": 50,
+      "total_records": 150,
+      "team_ids": ["1576840", "1576871", "3442692", "4858244"],
+      "teams": ["Fulfillment", "Operations", "Operations", "Warehousing"]
+    },
+    {
+      "department_id": "4729433",
+      "department_name": "Marketing & Communications",
+      "active_headcount": 8,
+      "total_records": 20,
+      "team_ids": ["584895", "382453"],
+      "teams": ["Communications", "Marketing"]
+    },
+    {
+      "department_id": "3443052",
+      "department_name": "Product Management",
+      "active_headcount": 5,
+      "total_records": 8,
+      "team_ids": ["492422"],
+      "teams": ["Product Management"]
+    },
+    {
+      "department_id": "3147919",
+      "department_name": "Sales",
+      "active_headcount": 25,
+      "total_records": 200,
+      "team_ids": ["4400959", "4400960"],
+      "teams": ["Sales", "Sales"]
+    },
+    {
+      "department_id": "1156006",
+      "department_name": "Sales Operations",
+      "active_headcount": 3,
+      "total_records": 5,
+      "team_ids": ["3146300"],
+      "teams": ["Sales Operations"]
+    },
+    {
+      "department_id": "4811949",
+      "department_name": "Strategic Operations",
+      "active_headcount": 2,
+      "total_records": 5,
+      "team_ids": ["4811949"],
+      "teams": ["Strategic Operations"]
+    },
+    {
+      "department_id": "4729430",
+      "department_name": "Vendor Management",
+      "active_headcount": 6,
+      "total_records": 15,
+      "team_ids": ["417185"],
+      "teams": ["Vendor Management"]
+    }
+  ]
+}