diff --git a/annofabcli/statistics/visualization/dataframe/actual_worktime.py b/annofabcli/statistics/visualization/dataframe/actual_worktime.py
index a1e264b6..13519381 100644
--- a/annofabcli/statistics/visualization/dataframe/actual_worktime.py
+++ b/annofabcli/statistics/visualization/dataframe/actual_worktime.py
@@ -21,7 +21,19 @@ class ActualWorktime:
 
     columns = ["project_id", "date", "account_id", "actual_worktime_hour"]
 
+    @staticmethod
+    def required_columns_exist(df: pandas.DataFrame) -> bool:
+        """
+        必須の列が存在するかどうかを返します。
+
+        Returns:
+            必須の列が存在するかどうか
+        """
+        return len(set(ActualWorktime.columns) - set(df.columns)) == 0
+
     def __init__(self, df: pandas.DataFrame) -> None:
+        if not self.required_columns_exist(df):
+            ValueError(f"引数`df`には、{ActualWorktime.columns}の列が必要です。")
         self.df = df
 
     def is_empty(self) -> bool:
diff --git a/annofabcli/statistics/visualize_statistics.py b/annofabcli/statistics/visualize_statistics.py
index fa692e3a..d343501f 100644
--- a/annofabcli/statistics/visualize_statistics.py
+++ b/annofabcli/statistics/visualize_statistics.py
@@ -435,8 +435,16 @@ def main(self) -> None:
 
         if args.labor_csv is None:
             logger.warning("'--labor_csv'が指定されていないので、実績作業時間に関する情報は出力されません。")
-
-        actual_worktime = ActualWorktime.from_csv(args.labor_csv) if args.labor_csv is not None else None
+            actual_worktime = ActualWorktime.empty()
+        else:
+            df_actual_worktime = pandas.read_csv(args.labor_csv)
+            if not ActualWorktime.required_columns_exist(df_actual_worktime):
+                logger.error(
+                    "引数`--labor_csv`のCSVには以下の列が存在しないので、終了します。\n"
+                    "`project_id`, `date`, `account_id`, `actual_worktime_hour`"
+                )
+                sys.exit(COMMAND_LINE_ERROR_STATUS_CODE)
+            actual_worktime = ActualWorktime(df_actual_worktime)
 
         with tempfile.TemporaryDirectory() as str_temp_dir:
             main_obj = VisualizingStatisticsMain(
@@ -568,7 +576,7 @@ def parse_args(parser: argparse.ArgumentParser) -> None:
             "* date\n"
             "* account_id\n"
             "* actual_worktime_hour\n"
-            "* project_id (optional: ``--project_id`` に複数の値を指定したときは必須です) \n"
+            "* project_id \n"
         ),
     )