diff --git a/src/main/java/edu/group5/app/model/Repository.java b/src/main/java/edu/group5/app/model/Repository.java
new file mode 100644
index 0000000..6850bfe
--- /dev/null
+++ b/src/main/java/edu/group5/app/model/Repository.java
@@ -0,0 +1,22 @@
+package edu.group5.app.model;
+
+import java.util.Map;
+
+/**
+ * Represents a repository
+ */
+public abstract class Repository<K, V> {
+  protected final Map<K, V> content;
+
+  public Repository(Map<K, V> content) {
+    this.content = content;
+  }
+
+  /**
+   * Gets the content of the repo
+   * @return content of the repo
+   */
+  public Map<K, V> getContent() {
+    return content;
+  }
+}
diff --git a/src/main/java/edu/group5/app/model/organization/Organization.java b/src/main/java/edu/group5/app/model/organization/Organization.java
index 825945f..941ed5a 100644
--- a/src/main/java/edu/group5/app/model/organization/Organization.java
+++ b/src/main/java/edu/group5/app/model/organization/Organization.java
@@ -1,5 +1,56 @@
 package edu.group5.app.model.organization;
 
-public class Organization {
-  
+import java.util.Objects;
+
+/**
+ * Represents an organization.
+ *
+ * <p>An organization is identified by an organization number, a name,
+ * trust status, website URL, pre-approval status, and a textual description.
+ *
+ * <p>Instances are validated on creation:
+ * <ul>
+ *   <li>orgNumber must be non-negative</li>
+ *   <li>name and websiteURL must not be null or blank</li>
+ *   <li>description must not be null</li>
+ * </ul>
+ */
+public record Organization(
+    int orgNumber,
+    String name,
+    boolean trusted,
+    String websiteURL,
+    boolean isPreApproved,
+    String description
+) {
+  /**
+   * Creates a new organization.
+   *
+   * @param orgNumber the organization number; must be non-negative
+   * @param name the organization name; must not be null or blank
+   * @param trusted whether the organization is trusted
+   * @param websiteURL the organization's website URL; must not be null or blank
+   * @param isPreApproved whether the organization is pre-approved
+   * @param description a textual description of the organization; must not be null
+   * @throws NullPointerException if name, websiteURL or description is null
+   * @throws IllegalArgumentException if orgNumber is negative, or if name or websiteURL is blank
+   */
+  public Organization(int orgNumber, String name, boolean trusted, String websiteURL, boolean isPreApproved, String description) {
+    if (orgNumber < 0) {
+      throw new IllegalArgumentException("orgNumber cannot be negative");
+    }
+    this.orgNumber = orgNumber;
+    this.name = Objects.requireNonNull(name, "name cannot be null");
+    this.trusted = trusted;
+    this.websiteURL = Objects.requireNonNull(websiteURL, "websiteURL cannot be null");
+    this.isPreApproved = isPreApproved;
+    this.description = Objects.requireNonNull(description, "description cannot be null");
+
+    if (name.isBlank()) {
+      throw new IllegalArgumentException("name cannot be blank");
+    }
+    if (websiteURL.isBlank()) {
+      throw new IllegalArgumentException("websiteURL cannot be blank");
+    }
+  }
 }
diff --git a/src/main/java/edu/group5/app/model/organization/OrganizationRepository.java b/src/main/java/edu/group5/app/model/organization/OrganizationRepository.java
new file mode 100644
index 0000000..14a77d0
--- /dev/null
+++ b/src/main/java/edu/group5/app/model/organization/OrganizationRepository.java
@@ -0,0 +1,38 @@
+package edu.group5.app.model.organization;
+
+import edu.group5.app.model.Repository;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Handles the business logic associated with organizations
+ */
+public class OrganizationRepository extends Repository<Integer, Organization> {
+  /**
+   * Creates a new Organization Repository
+   *
+   * @param content holds all current organizations in the repository; must not be null
+   * @throws NullPointerException if content is null
+   */
+  public OrganizationRepository(Map<Integer, Organization> content) {
+    super(Objects.requireNonNull(content, "content cannot be null"));
+  }
+
+  /**
+   * Gets all trusted organizations in the repository
+   * @return all organizations with trusted = true
+   */
+  public Map<Integer, Organization> getTrustedOrganizations() {
+    Map<Integer, Organization> trustedOrganizations = new HashMap<>();
+
+    content.forEach((orgNr, org) -> {
+      if (org.trusted()) {
+        trustedOrganizations.put(orgNr, org);
+      }
+    });
+
+    return trustedOrganizations;
+  }
+}
diff --git a/src/test/java/edu/group5/app/model/organization/OrganizationRepositoryTest.java b/src/test/java/edu/group5/app/model/organization/OrganizationRepositoryTest.java
new file mode 100644
index 0000000..3a3392e
--- /dev/null
+++ b/src/test/java/edu/group5/app/model/organization/OrganizationRepositoryTest.java
@@ -0,0 +1,48 @@
+package edu.group5.app.model.organization;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class OrganizationRepositoryTest {
+
+  private OrganizationRepository repository;
+
+  @BeforeEach
+  void setUp() {
+    Map<Integer, Organization> content = new HashMap<>();
+
+    Organization trustedOrganization1 = new Organization(1, "Trusted Org1", true, "org.com", true, "description");
+    Organization trustedOrganization2 = new Organization(2, "Trusted Org2", true, "org.com", true, "description");
+    Organization untrustedOrganization1 = new Organization(3, "Untrusted Org1", false, "org.com", true, "description");
+    Organization untrustedOrganization2 = new Organization(4, "Untrusted Org2", false, "org.com", true, "description");
+
+    content.put(1, trustedOrganization1);
+    content.put(2, trustedOrganization2);
+    content.put(3, untrustedOrganization1);
+    content.put(4, untrustedOrganization2);
+
+    repository = new OrganizationRepository(content);
+  }
+
+  @Test
+  void constructor_ThrowsWhenContentIsNull() {
+    assertThrows(NullPointerException.class, () -> new OrganizationRepository(null));
+  }
+
+  @Test
+  void getTrustedOrganizations_OnlyReturnsTrustedOrganizations() {
+    Map<Integer, Organization> trusted = repository.getTrustedOrganizations();
+
+    assertEquals(2, trusted.size());
+    assertTrue(trusted.containsKey(1));
+    assertTrue(trusted.containsKey(2));
+    assertFalse(trusted.containsKey(3));
+    assertFalse(trusted.containsKey(4));
+    assertTrue(trusted.values().stream().allMatch(Organization::trusted));
+  }
+}
\ No newline at end of file
diff --git a/src/test/java/edu/group5/app/model/organization/OrganizationTest.java b/src/test/java/edu/group5/app/model/organization/OrganizationTest.java
index 45e04ca..7f1b898 100644
--- a/src/test/java/edu/group5/app/model/organization/OrganizationTest.java
+++ b/src/test/java/edu/group5/app/model/organization/OrganizationTest.java
@@ -1,5 +1,101 @@
 package edu.group5.app.model.organization;
 
-public class OrganizationTest {
-  
-}
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class OrganizationTest {
+
+  @Test
+  void constructor_CreatesAnOrganizationWhenInputIsValid() {
+    Organization org = new Organization(
+        1,
+        "Org",
+        true,
+        "org.com",
+        true,
+        "Org description"
+    );
+
+    assertAll(
+        () -> assertEquals(1, org.orgNumber()),
+        () -> assertEquals("Org", org.name()),
+        () -> assertTrue(org.trusted()),
+        () -> assertEquals("org.com", org.websiteURL()),
+        () -> assertTrue(org.isPreApproved()),
+        () -> assertEquals("Org description", org.description())
+    );
+  }
+
+  @Test
+  void constructor_ThrowsWhenOrgNumberIsNegative() {
+    assertThrows(IllegalArgumentException.class, () -> new Organization(
+        -1,
+        "Org",
+        true,
+        "org.com",
+        true,
+        "Org description"
+    ));
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsNull() {
+    assertThrows(NullPointerException.class, () -> new Organization(
+        1,
+        null,
+        true,
+        "org.com",
+        true,
+        "Org description"
+    ));
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> new Organization(
+        1,
+        "",
+        true,
+        "org.com",
+        true,
+        "Org description"
+    ));
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsNull() {
+    assertThrows(NullPointerException.class, () -> new Organization(
+        1,
+        "Org",
+        true,
+        null,
+        true,
+        "Org description"
+    ));
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> new Organization(
+        1,
+        "Org",
+        true,
+        "",
+        true,
+        "Org description"
+    ));
+  }
+
+  @Test
+  void constructor_ThrowsWhenDescriptionIsNull() {
+    assertThrows(NullPointerException.class, () -> new Organization(
+        1,
+        "Org",
+        true,
+        "org.com",
+        true,
+        null
+    ));
+  }
+}
\ No newline at end of file