diff --git a/dcapi/include/dc.h b/dcapi/include/dc.h
index 84273d7c10..ddce814f65 100644
--- a/dcapi/include/dc.h
+++ b/dcapi/include/dc.h
@@ -13,11 +13,7 @@ extern "C" {
 
 #include <sys/syslog.h>
 #include <stdarg.h>
-
-enum {
-	DC_OK,
-	DC_ERROR
-};
+#include <dc_common.h>
 
 typedef enum {
 	DC_RESULT_ACCEPT,
@@ -138,6 +134,32 @@ int DC_submitWU (DC_Workunit wu);
 int DC_cancelWU (DC_Workunit wu);
 
 
+/** DC_suspend.
+ *  It cancels the running of the given work unit.
+ *  It is not deleted from the hdd, or from the memmory,
+ *  only from the execution system.
+ *
+ *  return: DC_OK
+ *
+ *  Comment: This has no meaning on BOINC, so nothing will happen with the
+ *           running client, but you will not get back the results even if
+ *           the wu is finished.
+ *           Even this feature is not implemented yet.
+ */
+int DC_suspendWU(DC_Workunit wu);
+
+
+/** DC_resubmit.
+ *  It restarts the given, suspended work unit.
+ *
+ *  return: DC_OK;
+ *
+ *  Comment: In BOINC based implementation, nothing happens to the client
+ *           but from now on you can get back the results.
+ *           Even this feature is not implemented yet.
+ */
+int DC_resubmitWU(DC_Workunit wu);
+
 /** Check for results.
  *  Waits for available results and returns the first.
  *  Return:  DC_OK on success
diff --git a/dcapi/include/dc_client.h b/dcapi/include/dc_client.h
index 83921d2a41..ca1f564e37 100644
--- a/dcapi/include/dc_client.h
+++ b/dcapi/include/dc_client.h
@@ -10,11 +10,7 @@
 extern "C" {
 #endif
 
-/* For return value */
-/*enum {
-	DC_OK,
-	DC_ERROR
-};*/
+#include <dc_common.h>
 
 /* For the DC_ResolveFileName function */
 #define DC_FILE_IN	0
diff --git a/dcapi/include/dc_common.h b/dcapi/include/dc_common.h
new file mode 100644
index 0000000000..1fe18f8421
--- /dev/null
+++ b/dcapi/include/dc_common.h
@@ -0,0 +1,22 @@
+/* API for Master-worker applications on Distributed Computing Platforms
+   Common definitions for the client and server side
+*/
+
+#ifndef __DC_COMMON_H_
+#define __DC_COMMON_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* API error codes */
+enum {
+	DC_OK,
+	DC_ERROR
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __DC_COMMON_H_ */