diff --git a/PHPCI/Plugin.php b/PHPCI/Plugin.php
index ac2960cd..23a2bbda 100644
--- a/PHPCI/Plugin.php
+++ b/PHPCI/Plugin.php
@@ -15,5 +15,6 @@ namespace PHPCI;
 */
 interface Plugin
 {
+    public function isAllowedInStage($stage);
     public function execute();
 }
diff --git a/PHPCI/Plugin/AbstractPlugin.php b/PHPCI/Plugin/AbstractPlugin.php
new file mode 100644
index 00000000..c986e602
--- /dev/null
+++ b/PHPCI/Plugin/AbstractPlugin.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace PHPCI\Plugin;
+
+use PHPCI\Plugin;
+
+abstract class AbstractPlugin implements Plugin
+{
+    /**
+     * Define the stages that this plugin is allowed to run in.
+     * @see AbstractPlugin::canExecute()
+     * @var array
+     */
+    protected $allowedStages = array('setup', 'test', 'complete', 'success', 'failure', 'fixed', 'broken');
+
+    /**
+     * Verify whether or not this plugin is allowed to execute in a given stage.
+     * @param string $stage
+     * @return bool
+     */
+    public function isAllowedInStage($stage)
+    {
+        return in_array($stage, $this->allowedStages);
+    }
+
+    /**
+     * Execute the plugin and return its success or failure.
+     * @return bool
+     */
+    abstract public function execute();
+}
diff --git a/PHPCI/Plugin/Atoum.php b/PHPCI/Plugin/Atoum.php
index 877f009b..52fcb019 100644
--- a/PHPCI/Plugin/Atoum.php
+++ b/PHPCI/Plugin/Atoum.php
@@ -17,8 +17,13 @@ use PHPCI\Model\Build;
  * Atoum plugin, runs Atoum tests within a project.
  * @package PHPCI\Plugin
  */
-class Atoum implements \PHPCI\Plugin
+class Atoum extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     private $args;
     private $config;
     private $directory;
diff --git a/PHPCI/Plugin/Behat.php b/PHPCI/Plugin/Behat.php
index d63016dc..5ace7bf3 100644
--- a/PHPCI/Plugin/Behat.php
+++ b/PHPCI/Plugin/Behat.php
@@ -20,8 +20,13 @@ use PHPCI\Model\BuildError;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Behat implements \PHPCI\Plugin
+class Behat extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $phpci;
     protected $build;
     protected $features;
diff --git a/PHPCI/Plugin/Campfire.php b/PHPCI/Plugin/Campfire.php
index 59ab9128..1829a8b3 100644
--- a/PHPCI/Plugin/Campfire.php
+++ b/PHPCI/Plugin/Campfire.php
@@ -20,8 +20,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Campfire implements \PHPCI\Plugin
+class Campfire extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     private $url;
     private $authToken;
     private $userAgent;
diff --git a/PHPCI/Plugin/CleanBuild.php b/PHPCI/Plugin/CleanBuild.php
index 684e8e7a..fa1f6790 100644
--- a/PHPCI/Plugin/CleanBuild.php
+++ b/PHPCI/Plugin/CleanBuild.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class CleanBuild implements \PHPCI\Plugin
+class CleanBuild extends AbstractPlugin
 {
     protected $remove;
     protected $phpci;
diff --git a/PHPCI/Plugin/Codeception.php b/PHPCI/Plugin/Codeception.php
index c28e3a48..f3eca9e5 100644
--- a/PHPCI/Plugin/Codeception.php
+++ b/PHPCI/Plugin/Codeception.php
@@ -14,6 +14,7 @@ use PHPCI\Helper\Lang;
 use PHPCI\Model\Build;
 use PHPCI\Plugin\Util\TestResultParsers\Codeception as Parser;
 use Psr\Log\LogLevel;
+use PHPCI\ZeroConfigPlugin;
 
 /**
  * Codeception Plugin - Enables full acceptance, unit, and functional testing.
@@ -23,8 +24,13 @@ use Psr\Log\LogLevel;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Codeception implements \PHPCI\Plugin, \PHPCI\ZeroConfigPlugin
+class Codeception extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /** @var string */
     protected $args = '';
 
diff --git a/PHPCI/Plugin/Composer.php b/PHPCI/Plugin/Composer.php
index bd5f6658..12938868 100644
--- a/PHPCI/Plugin/Composer.php
+++ b/PHPCI/Plugin/Composer.php
@@ -13,6 +13,7 @@ use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
 use PHPCI\Helper\Lang;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * Composer Plugin - Provides access to Composer functionality.
@@ -20,7 +21,7 @@ use PHPCI\Helper\Lang;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Composer implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class Composer extends AbstractPlugin implements ZeroConfigPlugin
 {
     protected $directory;
     protected $action;
diff --git a/PHPCI/Plugin/CopyBuild.php b/PHPCI/Plugin/CopyBuild.php
index f9646cac..b847b841 100644
--- a/PHPCI/Plugin/CopyBuild.php
+++ b/PHPCI/Plugin/CopyBuild.php
@@ -19,7 +19,7 @@ use PHPCI\Helper\Lang;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class CopyBuild implements \PHPCI\Plugin
+class CopyBuild extends AbstractPlugin
 {
     protected $directory;
     protected $ignore;
diff --git a/PHPCI/Plugin/Deployer.php b/PHPCI/Plugin/Deployer.php
index 2db839e3..80ed06d7 100644
--- a/PHPCI/Plugin/Deployer.php
+++ b/PHPCI/Plugin/Deployer.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Deployer implements \PHPCI\Plugin
+class Deployer extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     protected $webhookUrl;
     protected $reason;
 
diff --git a/PHPCI/Plugin/Email.php b/PHPCI/Plugin/Email.php
index 17e235e2..ef1fe7d5 100644
--- a/PHPCI/Plugin/Email.php
+++ b/PHPCI/Plugin/Email.php
@@ -23,8 +23,13 @@ use Psr\Log\LogLevel;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Email implements \PHPCI\Plugin
+class Email extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/Env.php b/PHPCI/Plugin/Env.php
index b89bf67d..a37446bd 100644
--- a/PHPCI/Plugin/Env.php
+++ b/PHPCI/Plugin/Env.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Env implements \PHPCI\Plugin
+class Env extends AbstractPlugin
 {
     protected $phpci;
     protected $build;
diff --git a/PHPCI/Plugin/FlowdockNotify.php b/PHPCI/Plugin/FlowdockNotify.php
index 8ac9f2ab..7f8b657c 100644
--- a/PHPCI/Plugin/FlowdockNotify.php
+++ b/PHPCI/Plugin/FlowdockNotify.php
@@ -19,8 +19,13 @@ use Mremi\Flowdock\Api\Push\TeamInboxMessage;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class FlowdockNotify implements \PHPCI\Plugin
+class FlowdockNotify extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     private $api_key;
     private $email;
     const MESSAGE_DEFAULT = 'Build %BUILD% has finished for commit <a href="%COMMIT_URI%">%SHORT_COMMIT%</a>
diff --git a/PHPCI/Plugin/Git.php b/PHPCI/Plugin/Git.php
index 60d6b551..7c146300 100644
--- a/PHPCI/Plugin/Git.php
+++ b/PHPCI/Plugin/Git.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Git implements \PHPCI\Plugin
+class Git extends AbstractPlugin
 {
     protected $phpci;
     protected $build;
diff --git a/PHPCI/Plugin/Grunt.php b/PHPCI/Plugin/Grunt.php
index 4d62ffd8..77715656 100644
--- a/PHPCI/Plugin/Grunt.php
+++ b/PHPCI/Plugin/Grunt.php
@@ -18,7 +18,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Grunt implements \PHPCI\Plugin
+class Grunt extends AbstractPlugin
 {
     protected $directory;
     protected $task;
diff --git a/PHPCI/Plugin/Gulp.php b/PHPCI/Plugin/Gulp.php
index b6c6cab4..bbdbf7e0 100644
--- a/PHPCI/Plugin/Gulp.php
+++ b/PHPCI/Plugin/Gulp.php
@@ -18,7 +18,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Gulp implements \PHPCI\Plugin
+class Gulp extends AbstractPlugin
 {
     protected $directory;
     protected $task;
diff --git a/PHPCI/Plugin/HipchatNotify.php b/PHPCI/Plugin/HipchatNotify.php
index a39b94fe..7af2f5f9 100644
--- a/PHPCI/Plugin/HipchatNotify.php
+++ b/PHPCI/Plugin/HipchatNotify.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class HipchatNotify implements \PHPCI\Plugin
+class HipchatNotify extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     protected $authToken;
     protected $color;
     protected $notify;
diff --git a/PHPCI/Plugin/Irc.php b/PHPCI/Plugin/Irc.php
index a7610a8c..7ae5beef 100644
--- a/PHPCI/Plugin/Irc.php
+++ b/PHPCI/Plugin/Irc.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Irc implements \PHPCI\Plugin
+class Irc extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     protected $phpci;
     protected $build;
     protected $message;
diff --git a/PHPCI/Plugin/Lint.php b/PHPCI/Plugin/Lint.php
index 1de49e41..2284ccfe 100644
--- a/PHPCI/Plugin/Lint.php
+++ b/PHPCI/Plugin/Lint.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Lint implements PHPCI\Plugin
+class Lint extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $directories;
     protected $recursive = true;
     protected $ignore;
diff --git a/PHPCI/Plugin/Mysql.php b/PHPCI/Plugin/Mysql.php
index fdb521ef..5d4035cd 100644
--- a/PHPCI/Plugin/Mysql.php
+++ b/PHPCI/Plugin/Mysql.php
@@ -21,7 +21,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Mysql implements \PHPCI\Plugin
+class Mysql extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/PackageBuild.php b/PHPCI/Plugin/PackageBuild.php
index fb116640..04a52d99 100644
--- a/PHPCI/Plugin/PackageBuild.php
+++ b/PHPCI/Plugin/PackageBuild.php
@@ -18,7 +18,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PackageBuild implements \PHPCI\Plugin
+class PackageBuild extends AbstractPlugin
 {
     protected $directory;
     protected $filename;
diff --git a/PHPCI/Plugin/Pdepend.php b/PHPCI/Plugin/Pdepend.php
index faef406d..10b787ac 100644
--- a/PHPCI/Plugin/Pdepend.php
+++ b/PHPCI/Plugin/Pdepend.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Pdepend implements \PHPCI\Plugin
+class Pdepend extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $args;
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/Pgsql.php b/PHPCI/Plugin/Pgsql.php
index 60057464..5d6d18e4 100644
--- a/PHPCI/Plugin/Pgsql.php
+++ b/PHPCI/Plugin/Pgsql.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Pgsql implements \PHPCI\Plugin
+class Pgsql extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/Phar.php b/PHPCI/Plugin/Phar.php
index c734bb6c..f3969829 100644
--- a/PHPCI/Plugin/Phar.php
+++ b/PHPCI/Plugin/Phar.php
@@ -10,7 +10,7 @@ use Phar as PHPPhar;
 /**
  * Phar Plugin
  */
-class Phar implements \PHPCI\Plugin
+class Phar extends AbstractPlugin
 {
     /**
      * PHPCI
diff --git a/PHPCI/Plugin/Phing.php b/PHPCI/Plugin/Phing.php
index e322b72e..08ced3c3 100644
--- a/PHPCI/Plugin/Phing.php
+++ b/PHPCI/Plugin/Phing.php
@@ -20,7 +20,7 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Phing implements \PHPCI\Plugin
+class Phing extends AbstractPlugin
 {
 
     private $directory;
diff --git a/PHPCI/Plugin/PhpCodeSniffer.php b/PHPCI/Plugin/PhpCodeSniffer.php
index 6f4ed4e0..8d072060 100644
--- a/PHPCI/Plugin/PhpCodeSniffer.php
+++ b/PHPCI/Plugin/PhpCodeSniffer.php
@@ -13,6 +13,7 @@ use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
 use PHPCI\Model\BuildError;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * PHP Code Sniffer Plugin - Allows PHP Code Sniffer testing.
@@ -20,8 +21,13 @@ use PHPCI\Model\BuildError;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpCodeSniffer implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class PhpCodeSniffer extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/PhpCpd.php b/PHPCI/Plugin/PhpCpd.php
index 2424d41e..f074f0dc 100644
--- a/PHPCI/Plugin/PhpCpd.php
+++ b/PHPCI/Plugin/PhpCpd.php
@@ -20,8 +20,13 @@ use PHPCI\Model\BuildError;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpCpd implements \PHPCI\Plugin
+class PhpCpd extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $directory;
     protected $args;
     protected $phpci;
diff --git a/PHPCI/Plugin/PhpCsFixer.php b/PHPCI/Plugin/PhpCsFixer.php
index 9aa0d33f..36033bf8 100644
--- a/PHPCI/Plugin/PhpCsFixer.php
+++ b/PHPCI/Plugin/PhpCsFixer.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpCsFixer implements \PHPCI\Plugin
+class PhpCsFixer extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/PhpDocblockChecker.php b/PHPCI/Plugin/PhpDocblockChecker.php
index 2396497c..7c20e013 100644
--- a/PHPCI/Plugin/PhpDocblockChecker.php
+++ b/PHPCI/Plugin/PhpDocblockChecker.php
@@ -12,6 +12,7 @@ namespace PHPCI\Plugin;
 use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * PHP Docblock Checker Plugin - Checks your PHP files for appropriate uses of Docblocks
@@ -19,8 +20,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpDocblockChecker implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class PhpDocblockChecker extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/PhpLoc.php b/PHPCI/Plugin/PhpLoc.php
index c8dedb91..c67c88f9 100644
--- a/PHPCI/Plugin/PhpLoc.php
+++ b/PHPCI/Plugin/PhpLoc.php
@@ -12,6 +12,7 @@ namespace PHPCI\Plugin;
 use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
+use PHPCI\ZeroConfigPlugin;
 
 /**
  * PHP Loc - Allows PHP Copy / Lines of Code testing.
@@ -19,7 +20,7 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class PhpLoc implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class PhpLoc extends AbstractPlugin implements ZeroConfigPlugin
 {
     /**
      * @var string
diff --git a/PHPCI/Plugin/PhpMessDetector.php b/PHPCI/Plugin/PhpMessDetector.php
index ec92bc61..11895f55 100644
--- a/PHPCI/Plugin/PhpMessDetector.php
+++ b/PHPCI/Plugin/PhpMessDetector.php
@@ -12,6 +12,7 @@ namespace PHPCI\Plugin;
 use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * PHP Mess Detector Plugin - Allows PHP Mess Detector testing.
@@ -19,8 +20,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpMessDetector implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class PhpMessDetector extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/PhpParallelLint.php b/PHPCI/Plugin/PhpParallelLint.php
index febed528..ed319a48 100644
--- a/PHPCI/Plugin/PhpParallelLint.php
+++ b/PHPCI/Plugin/PhpParallelLint.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpParallelLint implements \PHPCI\Plugin
+class PhpParallelLint extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/PhpSpec.php b/PHPCI/Plugin/PhpSpec.php
index e468a718..4918dd4e 100644
--- a/PHPCI/Plugin/PhpSpec.php
+++ b/PHPCI/Plugin/PhpSpec.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpSpec implements PHPCI\Plugin
+class PhpSpec extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/PhpTalLint.php b/PHPCI/Plugin/PhpTalLint.php
index 8513ec36..960ccfba 100644
--- a/PHPCI/Plugin/PhpTalLint.php
+++ b/PHPCI/Plugin/PhpTalLint.php
@@ -19,8 +19,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class PhpTalLint implements PHPCI\Plugin
+class PhpTalLint extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $directories;
     protected $recursive = true;
     protected $suffixes;
diff --git a/PHPCI/Plugin/PhpUnit.php b/PHPCI/Plugin/PhpUnit.php
index f716f079..6923915c 100644
--- a/PHPCI/Plugin/PhpUnit.php
+++ b/PHPCI/Plugin/PhpUnit.php
@@ -13,6 +13,7 @@ use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
 use PHPCI\Plugin\Util\TapParser;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * PHP Unit Plugin - Allows PHP Unit testing.
@@ -20,8 +21,13 @@ use PHPCI\Plugin\Util\TapParser;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class PhpUnit implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class PhpUnit extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     protected $args;
     protected $phpci;
     protected $build;
diff --git a/PHPCI/Plugin/Shell.php b/PHPCI/Plugin/Shell.php
index 5e914f3e..ca219ab6 100644
--- a/PHPCI/Plugin/Shell.php
+++ b/PHPCI/Plugin/Shell.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class Shell implements \PHPCI\Plugin
+class Shell extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/SlackNotify.php b/PHPCI/Plugin/SlackNotify.php
index 0e8d1cad..5b83d4fb 100644
--- a/PHPCI/Plugin/SlackNotify.php
+++ b/PHPCI/Plugin/SlackNotify.php
@@ -17,8 +17,13 @@ use PHPCI\Model\Build;
  * @package      PHPCI
  * @subpackage   Plugins
  */
-class SlackNotify implements \PHPCI\Plugin
+class SlackNotify extends AbstractPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('complete', 'success', 'failure', 'fixed', 'broken');
+
     private $webHook;
     private $room;
     private $username;
diff --git a/PHPCI/Plugin/Sqlite.php b/PHPCI/Plugin/Sqlite.php
index f80ece3d..bd616eb0 100644
--- a/PHPCI/Plugin/Sqlite.php
+++ b/PHPCI/Plugin/Sqlite.php
@@ -19,7 +19,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Sqlite implements \PHPCI\Plugin
+class Sqlite extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/TechnicalDebt.php b/PHPCI/Plugin/TechnicalDebt.php
index 6d4711b5..e22d213e 100755
--- a/PHPCI/Plugin/TechnicalDebt.php
+++ b/PHPCI/Plugin/TechnicalDebt.php
@@ -12,6 +12,7 @@ namespace PHPCI\Plugin;
 use PHPCI;
 use PHPCI\Builder;
 use PHPCI\Model\Build;
+use PHPCI\ZeroConfigPlugin;
 
 /**
 * Technical Debt Plugin - Checks for existence of "TODO", "FIXME", etc.
@@ -20,8 +21,13 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class TechnicalDebt implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
+class TechnicalDebt extends AbstractPlugin implements ZeroConfigPlugin
 {
+    /**
+     * @inheritdoc
+     */
+    protected $allowedStages = array('test');
+
     /**
      * @var \PHPCI\Builder
      */
diff --git a/PHPCI/Plugin/Util/Executor.php b/PHPCI/Plugin/Util/Executor.php
index bdd06b7e..66c0e108 100644
--- a/PHPCI/Plugin/Util/Executor.php
+++ b/PHPCI/Plugin/Util/Executor.php
@@ -138,7 +138,7 @@ class Executor
             $this->setPluginStatus($stage, $plugin, Build::STATUS_RUNNING);
 
             // Try and execute it
-            if ($this->executePlugin($plugin, $options)) {
+            if ($this->executePlugin($plugin, $options, $stage)) {
                 // Execution was successful
                 $this->logger->logSuccess(Lang::get('plugin_success'));
                 $this->setPluginStatus($stage, $plugin, Build::STATUS_SUCCESS);
@@ -166,8 +166,12 @@ class Executor
 
     /**
      * Executes a given plugin, with options and returns the result.
+     * @param string $plugin Plugin name
+     * @param array $options Plugin options (from phpci.yml)
+     * @param string $stage Stage name
+     * @return bool
      */
-    public function executePlugin($plugin, $options)
+    public function executePlugin($plugin, $options, $stage)
     {
         // Any plugin name without a namespace separator is a PHPCI built in plugin
         // if not we assume it's a fully name-spaced class name that implements the plugin interface.
@@ -188,6 +192,12 @@ class Executor
         try {
             // Build and run it
             $obj = $this->pluginFactory->buildPlugin($class, $options);
+
+            if (!$obj->isAllowedInStage($stage)) {
+                $this->logger->logFailure('Plugin "' . $plugin . '" cannot be run in stage: ' . $stage);
+                return false;
+            }
+
             return $obj->execute();
         } catch (\Exception $ex) {
             $this->logger->logFailure(Lang::get('exception') . $ex->getMessage(), $ex);
diff --git a/PHPCI/Plugin/Wipe.php b/PHPCI/Plugin/Wipe.php
index e6b619a0..aa3d4156 100644
--- a/PHPCI/Plugin/Wipe.php
+++ b/PHPCI/Plugin/Wipe.php
@@ -18,7 +18,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class Wipe implements \PHPCI\Plugin
+class Wipe extends AbstractPlugin
 {
     /**
      * @var \PHPCI\Builder
diff --git a/PHPCI/Plugin/Xmpp.php b/PHPCI/Plugin/Xmpp.php
index ccfc4399..53d440f8 100644
--- a/PHPCI/Plugin/Xmpp.php
+++ b/PHPCI/Plugin/Xmpp.php
@@ -18,7 +18,7 @@ use PHPCI\Model\Build;
 * @package      PHPCI
 * @subpackage   Plugins
 */
-class XMPP implements \PHPCI\Plugin
+class XMPP extends AbstractPlugin
 {
     protected $directory;
     protected $phpci;