diff --git a/em-oop/src/EmployeeData.java b/em-oop/src/EmployeeData.java
index 7cb31d1..7950669 100644
--- a/em-oop/src/EmployeeData.java
+++ b/em-oop/src/EmployeeData.java
@@ -1,5 +1,5 @@
 
-public class EmployeeData {
+public class EmployeeData extends BaseDate {
 	private String idEmployee;
 	private String nmEmployee;
 	private String knEmployee;
@@ -71,6 +71,11 @@ public class EmployeeData {
 
 	public EmployeeData(String idEmployee, String nmEmployee, String knEmployee, String mailAddress, String password,
 			String idDepartment) {
+		idEmployee = idEmployee.trim();
+		int in =idEmployee.length();
+		if (in==0) {
+			nmEmployee ="社員IDが空のため設定できませんでした";
+		}
 		this.setIdEmployee(idEmployee);
 		nmEmployee = nmEmployee.trim();
 		int i =nmEmployee.length();
@@ -88,4 +93,17 @@ public class EmployeeData {
 		int result = empCount;
 		return result;
 	}
+
+	@Override
+	public String toCSV() {
+		String str;
+		str = (getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress()
+		+ "," + getPassword() + "," + getIdDepartment());
+		return str;
+	}
+
+	@Override
+	public String getPrimaryKeyValue() {
+		return idEmployee;
+	}
 }
diff --git a/em-oop/src/Main.java b/em-oop/src/Main.java
index 9611f88..d243b7b 100644
--- a/em-oop/src/Main.java
+++ b/em-oop/src/Main.java
@@ -4,7 +4,7 @@ public class Main {
 	public static void main(String[] args) {
 		EmployeeData[] employee = new EmployeeData[5];
 		
-		employee[0] = new EmployeeData("10000","","ヤマダタツヤ","yamada@hoge.jp","aaa","10");
+		employee[0] = new EmployeeData("10000","山田","ヤマダタツヤ","yamada@hoge.jp","aaa","10");
 		employee[1] = new EmployeeData("10001","高橋準","タカハシジュン","jtaka@hoge.jp","bbb","11");
 		employee[2] = new EmployeeData("10002","麻枝史明","マエダフミアキ","fmak@hoge.jp","ccc","12");
 		employee[3] = new EmployeeData("10003","丸戸章介","マルトショウスケ","marusyo@hoge.jp","ddd","13");
@@ -16,6 +16,9 @@ public class Main {
 		}
 		int i=EmployeeData.getEmpCount();
 		System.out.println("現在の社員データ件数;"+ i + "件");
+		
+		System.out.println(employee[0].toCSV());
+	    System.out.println(employee[0].getPrimaryKeyValue());
 	}
 }