diff --git a/modules/os2forms_nemid/src/Plugin/Block/NemidLoginLogoutLink.php b/modules/os2forms_nemid/src/Plugin/Block/NemidLoginLogoutLink.php
new file mode 100644
index 0000000..22fa38c
--- /dev/null
+++ b/modules/os2forms_nemid/src/Plugin/Block/NemidLoginLogoutLink.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace Drupal\os2forms_nemid\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provides a 'OS2Forms Nemid Login/out link' block.
+ *
+ * @Block(
+ *   id = "os2forms_nemid_login_logout_link",
+ *   admin_label = @Translation("OS2Forms Nemid Login/out link")
+ * )
+ */
+class NemidLoginLogoutLink extends BlockBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return [
+      'link_login_text' => $this->t('Login'),
+      'link_logout_text' => $this->t('Logout'),
+      'hide_login_button' => FALSE,
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function blockForm($form, FormStateInterface $form_state) {
+    $form['hide_login_button'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Hide login button'),
+      '#default_value' => $this->configuration['hide_login_button'],
+    ];
+    $form['link_login_text'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Login text'),
+      '#description' => $this->t('A text on login link.'),
+      '#default_value' => $this->configuration['link_login_text'],
+      '#states' => [
+        'visible' => [
+          'input[name="settings[hide_login_button]"]' => ['checked' => FALSE],
+        ],
+      ],
+    ];
+    $form['link_logout_text'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Logout text'),
+      '#description' => $this->t('A text on logout link.'),
+      '#default_value' => $this->configuration['link_logout_text'],
+    ];
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function blockSubmit($form, FormStateInterface $form_state) {
+    $this->configuration['hide_login_button'] = $form_state->getValue('hide_login_button');
+    $this->configuration['link_login_text'] = $form_state->getValue('link_login_text');
+    $this->configuration['link_logout_text'] = $form_state->getValue('link_logout_text');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    /** @var \Drupal\os2web_nemlogin\Service\AuthProviderService $authProviderService */
+    $authProviderService = \Drupal::service('os2web_nemlogin.auth_provider');
+    $plugin = $authProviderService->getActivePlugin();
+
+    // Do nothing if there is no auth plugin.
+    if (empty($plugin)) {
+      return [];
+    }
+
+    if (!$plugin->isAuthenticated() && $this->configuration['hide_login_button']) {
+      return [];
+    }
+
+    $link = $authProviderService->generateLink($this->configuration['link_login_text'], $this->configuration['link_logout_text']);
+    $element['#title'] = $link->getText();
+    $element['#url'] = $link->getUrl();
+    $build['login_logout_link'] = [
+      '#title' => $link->getText(),
+      '#type' => 'link',
+      '#url' => $link->getUrl(),
+    ];
+
+    return $build;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheMaxAge() {
+    return 0;
+  }
+
+}