diff --git a/include/civetweb.h b/include/civetweb.h
index 54159455..d4b94aaa 100644
--- a/include/civetweb.h
+++ b/include/civetweb.h
@@ -206,6 +206,12 @@ struct mg_callbacks {
 	     ctx: context handle */
 	void (*init_context)(const struct mg_context *ctx);
 
+	/* Called when a new worker thread is initialized.
+	   Parameters:
+	     ctx: context handle
+	     thread_type: a value of 1 indicates a worker thread. */
+	void(*init_thread)(const struct mg_context *ctx, int thread_type);
+
 	/* Called when civetweb context is deleted.
 	   Parameters:
 	     ctx: context handle */
diff --git a/src/civetweb.c b/src/civetweb.c
index 2898b77c..4c0bc7d5 100644
--- a/src/civetweb.c
+++ b/src/civetweb.c
@@ -12299,6 +12299,10 @@ worker_thread_run(void *thread_func_param)
 	tls.pthread_cond_helper_mutex = CreateEvent(NULL, FALSE, FALSE, NULL);
 #endif
 
+	if (ctx->callbacks.init_thread) {
+		ctx->callbacks.init_thread(ctx, 1);
+	}
+
 	conn =
 	    (struct mg_connection *)mg_calloc(1, sizeof(*conn) + MAX_REQUEST_SIZE);
 	if (conn == NULL) {