diff --git a/src/TamerLib/Exceptions/ConnectionException.php b/src/TamerLib/Exceptions/ConnectionException.php
index af73ab6..c506e46 100644
--- a/src/TamerLib/Exceptions/ConnectionException.php
+++ b/src/TamerLib/Exceptions/ConnectionException.php
@@ -9,11 +9,10 @@
     {
         /**
          * @param string $message
-         * @param int $code
          * @param Throwable|null $previous
          */
-        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        public function __construct(string $message = "", ?Throwable $previous = null)
         {
-            parent::__construct($message, $code, $previous);
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
         }
     }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/JobManagerException.php b/src/TamerLib/Exceptions/JobManagerException.php
new file mode 100644
index 0000000..b6c5e17
--- /dev/null
+++ b/src/TamerLib/Exceptions/JobManagerException.php
@@ -0,0 +1,17 @@
+<?php
+
+    namespace TamerLib\Exceptions;
+
+    use Throwable;
+
+    class JobManagerException extends \Exception
+    {
+        /**
+         * @param string $message
+         * @param Throwable|null $previous
+         */
+        public function __construct(string $message = "", ?Throwable $previous = null)
+        {
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
+        }
+    }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/JobNotFoundException.php b/src/TamerLib/Exceptions/JobNotFoundException.php
index d1b7919..02d20f6 100644
--- a/src/TamerLib/Exceptions/JobNotFoundException.php
+++ b/src/TamerLib/Exceptions/JobNotFoundException.php
@@ -9,11 +9,10 @@
     {
         /**
          * @param string $message
-         * @param int $code
          * @param Throwable|null $previous
          */
-        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        public function __construct(string $message = "", ?Throwable $previous = null)
         {
-            parent::__construct($message, $code, $previous);
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
         }
     }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/NoAvailablePortException.php b/src/TamerLib/Exceptions/NoAvailablePortException.php
index feb1573..53f099f 100644
--- a/src/TamerLib/Exceptions/NoAvailablePortException.php
+++ b/src/TamerLib/Exceptions/NoAvailablePortException.php
@@ -9,11 +9,10 @@
     {
         /**
          * @param string $message
-         * @param int $code
          * @param Throwable|null $previous
          */
-        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        public function __construct(string $message = "", ?Throwable $previous = null)
         {
-            parent::__construct($message, $code, $previous);
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
         }
     }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/ServerException.php b/src/TamerLib/Exceptions/ServerException.php
index 5c7f339..c894279 100644
--- a/src/TamerLib/Exceptions/ServerException.php
+++ b/src/TamerLib/Exceptions/ServerException.php
@@ -7,8 +7,12 @@
 
     class ServerException extends Exception
     {
-        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        /**
+         * @param string $message
+         * @param Throwable|null $previous
+         */
+        public function __construct(string $message = "", ?Throwable $previous = null)
         {
-            parent::__construct($message, $code, $previous);
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
         }
     }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/TamerException.php b/src/TamerLib/Exceptions/TamerException.php
new file mode 100644
index 0000000..0518312
--- /dev/null
+++ b/src/TamerLib/Exceptions/TamerException.php
@@ -0,0 +1,18 @@
+<?php
+
+    namespace TamerLib\Exceptions;
+
+    use Exception;
+    use Throwable;
+
+    class TamerException extends Exception
+    {
+        /**
+         * @param string $message
+         * @param Throwable|null $previous
+         */
+        public function __construct(string $message = "", ?Throwable $previous = null)
+        {
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
+        }
+    }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/TimeoutException.php b/src/TamerLib/Exceptions/TimeoutException.php
index 38b605c..05cee67 100644
--- a/src/TamerLib/Exceptions/TimeoutException.php
+++ b/src/TamerLib/Exceptions/TimeoutException.php
@@ -9,11 +9,10 @@
     {
         /**
          * @param string $message
-         * @param int $code
          * @param Throwable|null $previous
          */
-        public function __construct(string $message = "", int $code = 0, ?Throwable $previous = null)
+        public function __construct(string $message = "", ?Throwable $previous = null)
         {
-            parent::__construct($message, $code, $previous);
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
         }
     }
\ No newline at end of file
diff --git a/src/TamerLib/Exceptions/WorkerFailedException.php b/src/TamerLib/Exceptions/WorkerFailedException.php
new file mode 100644
index 0000000..ec94f3d
--- /dev/null
+++ b/src/TamerLib/Exceptions/WorkerFailedException.php
@@ -0,0 +1,18 @@
+<?php
+
+    namespace TamerLib\Exceptions;
+
+    use Exception;
+    use Throwable;
+
+    class WorkerFailedException extends Exception
+    {
+        /**
+         * @param string $message
+         * @param Throwable|null $previous
+         */
+        public function __construct(string $message = "", ?Throwable $previous = null)
+        {
+            parent::__construct($message, ($previous ? $previous->getCode() : 0), $previous);
+        }
+    }
\ No newline at end of file