diff --git a/em-oop/src/EmployeeData.java b/em-oop/src/EmployeeData.java
index a4486e2..cd2f52e 100644
--- a/em-oop/src/EmployeeData.java
+++ b/em-oop/src/EmployeeData.java
@@ -41,6 +41,10 @@ public class EmployeeData extends BaseData {
 
 	public void setIdEmployee(String idEmployee) {
 		this.idEmployee = idEmployee;
+		if (idEmployee == null || idEmployee.strip().isEmpty()) {
+			System.out.println("社員IDが空のため設定できませんでした");
+			return;
+		}
 	}
 
 	public String getNmEmployee() {
diff --git a/em-oop/src/Main.java b/em-oop/src/Main.java
index 36e2dd3..718a01c 100644
--- a/em-oop/src/Main.java
+++ b/em-oop/src/Main.java
@@ -80,6 +80,10 @@ public class Main {
 			EmployeeData sampleEmp = (EmployeeData) allData[0];
 			sampleEmp.setNmEmployee("");
 		}
+		if (allData[0] instanceof EmployeeData) {
+			EmployeeData sampleEmp = (EmployeeData) allData[0];
+			sampleEmp.setIdEmployee("");
+		}
 
 		//			String serchId1 = "10002";
 		//		System.out.println(serchId1 + "を検索します");