diff --git a/src/main/java/jamesbarclay/Worker.java b/src/main/java/jamesbarclay/Worker.java
new file mode 100644
index 0000000..e43f3e9
--- /dev/null
+++ b/src/main/java/jamesbarclay/Worker.java
@@ -0,0 +1,93 @@
+package jamesbarclay;
+
+public class Worker {
+
+    private String firstName;
+    private String lastName;
+    private int age;
+    private String email;
+    private int IdNumber;
+    private String phoneNumber;
+
+
+    public Worker(String firstName, String lastName, int age,
+                  String email, int IdNumber, String phoneNumber) {
+
+
+        if (phoneNumber == null || phoneNumber.isEmpty()) {
+            throw new IllegalArgumentException("Phone number cannot be empty");
+        }
+
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.age = age;
+        this.IdNumber = IdNumber;
+        this.email = email;
+        this.phoneNumber = phoneNumber;
+    }
+
+    // Getters
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public int getIdNumber() {
+        return IdNumber;
+    }
+
+    public String getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    // Setters
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public void setIdNumber(int IdNumber) {
+        this.IdNumber = IdNumber;
+    }
+
+    public void setPhoneNumber(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+
+        if (phoneNumber == null || phoneNumber.isEmpty()) {
+            throw new IllegalArgumentException("Phone number cannot be empty");
+        }
+    }
+    // Custom Method #1
+    // Returns the worker's full name
+    public String getFullName() {
+        return firstName + " " + lastName;
+    }
+
+    // Custom Method #2
+    // Checks if the worker is an adult
+    public boolean isAdult() {
+        return age >= 18;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/jamesbarclay/WorkerTest.java b/src/main/java/jamesbarclay/WorkerTest.java
new file mode 100644
index 0000000..f9ae731
--- /dev/null
+++ b/src/main/java/jamesbarclay/WorkerTest.java
@@ -0,0 +1,95 @@
+package jamesbarclay;
+
+//compares expected vs actual values
+import static org.testng.AssertJUnit.assertEquals;
+import static org.testng.AssertJUnit.assertTrue;
+
+// creates tests
+import org.testng.annotations.Test;
+
+public class WorkerTest {
+
+    // This test checks if the constructor correctly creates a Worker object
+    @Test
+    public void constructorShouldCreateWorkerWithValidData() {
+
+        // Create a new Worker object using the constructor
+        Worker worker = new Worker("James", "Barclay", 34, "JB@gmail.com",
+                12345, "302-555-5555");
+
+        // Check if values were passed into the constructor correctly
+        assertEquals("James", worker.getFirstName());
+        assertEquals("Barclay", worker.getLastName());
+        assertEquals(34, worker.getAge());
+        assertEquals(12345, worker.getIdNumber());
+        assertEquals("JB@gmail.com", worker.getEmail());
+        assertEquals("302-555-5555", worker.getPhoneNumber());
+    }
+
+    // This test checks that the setter methods to be able to update the Worker values
+    @Test
+    public void settersShouldUpdateValues() {
+
+        // Create a Worker object with starting values
+        Worker worker = new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "222-222-2222");
+
+        // Use setter methods to change the values
+        worker.setFirstName("J");
+        worker.setLastName("B");
+        worker.setAge(50);
+        worker.setEmail("jbs@gmail.com");
+        worker.setIdNumber(11111);
+        worker.setPhoneNumber("333-333-3333");
+
+        // Verify that the values were updated
+        assertEquals("J", worker.getFirstName());
+        assertEquals("B", worker.getLastName());
+        assertEquals(50, worker.getAge());
+        assertEquals("jbs@gmail.com", worker.getEmail());
+        assertEquals(11111, worker.getIdNumber());
+        assertEquals("333-333-3333", worker.getPhoneNumber());
+    }
+    // Test custom method getFullName()
+    @Test
+    public void getFullNameShouldReturnFullName() {
+
+        Worker worker = new Worker("James", "Barclay", 34,
+                "jb@gmail.com", 12345, "302-555-5555");
+
+        assertEquals("James Barclay", worker.getFullName());
+    }
+
+    // Test custom method isAdult()
+    @Test
+    public void isAdultShouldReturnTrueForAdult() {
+
+        Worker worker = new Worker("James", "Barclay", 34,
+                "jb@gmail.com", 12345, "302-555-5555");
+
+        assertTrue(worker.isAdult());
+    }
+
+    // This test checks that the constructor throws an error if the phone number is empty
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void constructorShouldThrowExceptionWhenPhoneNumberIsEmpty() {
+
+        // This should fail because the phone number is empty
+        new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "");
+    }
+
+    // This test checks that the setter method also throws an error
+    // if someone tries to set the phone number to an empty value
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void setterShouldThrowExceptionWhenPhoneNumberIsEmpty() {
+
+        // First create a Worker with a valid phone number
+        Worker worker = new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "111-111-1111");
+
+        // This should throw an IllegalArgumentException
+        worker.setPhoneNumber("");
+    }
+
+}
\ No newline at end of file
diff --git a/src/test/java/object/example/WorkerTest.java b/src/test/java/object/example/WorkerTest.java
new file mode 100644
index 0000000..75c12b4
--- /dev/null
+++ b/src/test/java/object/example/WorkerTest.java
@@ -0,0 +1,96 @@
+package object.example;
+
+//compares expected vs actual values
+import static org.testng.AssertJUnit.assertEquals;
+import static org.testng.AssertJUnit.assertTrue;
+
+// creates tests
+import jamesbarclay.Worker;
+import org.testng.annotations.Test;
+
+public class WorkerTest {
+
+    // This test checks if the constructor correctly creates a Worker object
+    @Test
+    public void constructorShouldCreateWorkerWithValidData() {
+
+        // Create a new Worker object using the constructor
+        Worker worker = new Worker("James", "Barclay", 34, "JB@gmail.com",
+                12345, "302-555-5555");
+
+        // Check if values were passed into the constructor correctly
+        assertEquals("James", worker.getFirstName());
+        assertEquals("Barclay", worker.getLastName());
+        assertEquals(34, worker.getAge());
+        assertEquals(12345, worker.getIdNumber());
+        assertEquals("JB@gmail.com", worker.getEmail());
+        assertEquals("302-555-5555", worker.getPhoneNumber());
+    }
+
+    // This test checks that the setter methods to be able to update the Worker values
+    @Test
+    public void settersShouldUpdateValues() {
+
+        // Create a Worker object with starting values
+        Worker worker = new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "222-222-2222");
+
+        // Use setter methods to change the values
+        worker.setFirstName("J");
+        worker.setLastName("B");
+        worker.setAge(50);
+        worker.setEmail("jbs@gmail.com");
+        worker.setIdNumber(11111);
+        worker.setPhoneNumber("333-333-3333");
+
+        // Verify that the values were updated
+        assertEquals("J", worker.getFirstName());
+        assertEquals("B", worker.getLastName());
+        assertEquals(50, worker.getAge());
+        assertEquals("jbs@gmail.com", worker.getEmail());
+        assertEquals(11111, worker.getIdNumber());
+        assertEquals("333-333-3333", worker.getPhoneNumber());
+    }
+    // Test custom method getFullName()
+    @Test
+    public void getFullNameShouldReturnFullName() {
+
+        Worker worker = new Worker("James", "Barclay", 34,
+                "jb@gmail.com", 12345, "302-555-5555");
+
+        assertEquals("James Barclay", worker.getFullName());
+    }
+
+    // Test custom method isAdult()
+    @Test
+    public void isAdultShouldReturnTrueForAdult() {
+
+        Worker worker = new Worker("James", "Barclay", 34,
+                "jb@gmail.com", 12345, "302-555-5555");
+
+        assertTrue(worker.isAdult());
+    }
+
+    // This test checks that the constructor throws an error if the phone number is empty
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void constructorShouldThrowExceptionWhenPhoneNumberIsEmpty() {
+
+        // This should fail because the phone number is empty
+        new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "");
+    }
+
+    // This test checks that the setter method also throws an error
+    // if someone tries to set the phone number to an empty value
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void setterShouldThrowExceptionWhenPhoneNumberIsEmpty() {
+
+        // First create a Worker with a valid phone number
+        Worker worker = new Worker("Mike", "M", 40, "Mike@gmail.com",
+                54321, "111-111-1111");
+
+        // This should throw an IllegalArgumentException
+        worker.setPhoneNumber("");
+    }
+
+}
\ No newline at end of file