diff --git a/hsparse/parse_csv_contacts.py b/hsparse/parse_csv_contacts.py
index a52311e..d8d3350 100644
--- a/hsparse/parse_csv_contacts.py
+++ b/hsparse/parse_csv_contacts.py
@@ -45,6 +45,13 @@ def parse_args():
         action="store_true",
     )
 
+    parser.add_argument(
+        "-e",
+        "--empty",
+        help="List empty columns",
+        action="store_true",
+    )
+
     parser.add_argument(
         "-f",
         "--fields",
@@ -62,6 +69,16 @@ def csv_dump(CSV):
         print(chunk.to_string())
 
 
+def csv_empty(CSV):
+    df = pd.read_csv(CSV, low_memory=False, header=0)
+    empty_columns = [col for col in df.columns if df[col].isnull().all()]
+    if empty_columns:
+        print("Empty columns:")
+        print("\n".join(empty_columns))
+    else:
+        print("No empty columns found.")
+
+
 def csv_fields(CSV):
     df = pd.read_csv(CSV, low_memory=False, header=0)
     print("\n".join([col for col in df.columns]))
@@ -74,6 +91,9 @@ def main():
     if args.dump:
         csv_dump(CSV)
 
+    if args.empty:
+        csv_empty(CSV)
+
     if args.fields:
         csv_fields(CSV)