diff --git a/include/trick/MonteCarlo.hh b/include/trick/MonteCarlo.hh
index 2fdee33f..5ce4e490 100644
--- a/include/trick/MonteCarlo.hh
+++ b/include/trick/MonteCarlo.hh
@@ -254,6 +254,9 @@ namespace Trick {
             ALL            /**< report all messages (error, informational & warning) */
         };
 
+        /** Options to be passed to the slave sim. */
+        std::string slave_sim_options;
+
         private:
         int run_queue(Trick::ScheduledJobQueue* queue, std::string in_string) ;
 
diff --git a/include/trick/montecarlo_c_intf.h b/include/trick/montecarlo_c_intf.h
index fee6f41b..54690d47 100644
--- a/include/trick/montecarlo_c_intf.h
+++ b/include/trick/montecarlo_c_intf.h
@@ -95,6 +95,18 @@ unsigned int mc_get_max_tries();
  */
 void mc_set_user_cmd_string(const char *user_cmd_string);
 
+/**
+ * @relates Trick::MonteCarlo
+ * set #Trick::MonteCarlo::slave_sim_options
+ */
+void mc_set_slave_sim_options(const char *slave_sim_options);
+
+/**
+ * @relates Trick::MonteCarlo
+ * get #Trick::MonteCarlo::slave_sim_options
+ */
+const char *mc_get_slave_sim_options();
+
 /**
  * @relates Trick::MonteCarlo
  * @copydoc get_user_cmd_string
diff --git a/trick_source/sim_services/MonteCarlo/MonteCarlo_c_intf.cpp b/trick_source/sim_services/MonteCarlo/MonteCarlo_c_intf.cpp
index e2ec025b..6d99fa02 100644
--- a/trick_source/sim_services/MonteCarlo/MonteCarlo_c_intf.cpp
+++ b/trick_source/sim_services/MonteCarlo/MonteCarlo_c_intf.cpp
@@ -104,6 +104,19 @@ extern "C" const char *mc_get_user_cmd_string() {
     return NULL ;
 }
 
+extern "C" void mc_set_slave_sim_options(const char *slave_sim_options) {
+    if ( the_mc != NULL ) {
+        the_mc->slave_sim_options = std::string(slave_sim_options ? slave_sim_options : "");
+    }
+}
+
+extern "C" const char *mc_get_slave_sim_options() {
+    if ( the_mc != NULL ) {
+        return the_mc->slave_sim_options.c_str();
+    }
+    return NULL ;
+}
+
 extern "C" void mc_set_custom_pre_text(const char *custom_pre_text) {
     if ( the_mc != NULL ) {
         the_mc->set_custom_pre_text(std::string(custom_pre_text ? custom_pre_text : ""));
diff --git a/trick_source/sim_services/MonteCarlo/MonteCarlo_spawn_slaves.cpp b/trick_source/sim_services/MonteCarlo/MonteCarlo_spawn_slaves.cpp
index e6b6caa4..02a796c5 100644
--- a/trick_source/sim_services/MonteCarlo/MonteCarlo_spawn_slaves.cpp
+++ b/trick_source/sim_services/MonteCarlo/MonteCarlo_spawn_slaves.cpp
@@ -53,6 +53,11 @@ void Trick::MonteCarlo::initialize_slave(Trick::MonteSlave* slave_to_init) {
        << " -O " << run_directory;
     buffer += ss.str();
 
+    /** <li> Append user sim options. */
+    if (!slave_sim_options.empty()) {
+        buffer += " " + slave_sim_options;
+    }
+
     /** <li> if this is a custom slave dispatch, append the #custom_post_text. */
     if (custom_slave_dispatch) {
         buffer += custom_post_text;