diff --git a/rq/logutils.py b/rq/logutils.py
index 2d849c1..324553b 100644
--- a/rq/logutils.py
+++ b/rq/logutils.py
@@ -20,7 +20,9 @@ def setup_loghandlers(level=None, date_format=DEFAULT_LOGGING_DATE_FORMAT,
         logger.addHandler(handler)
 
     if level is not None:
-        logger.setLevel(level)
+        # The level may be a numeric value (e.g. when using the logging module constants)
+        # Or a string representation of the logging level
+        logger.setLevel(level if isinstance(level, int) else level.upper())
 
 
 def _has_effective_handler(logger):
diff --git a/rq/worker.py b/rq/worker.py
index 50d1733..7e090f5 100644
--- a/rq/worker.py
+++ b/rq/worker.py
@@ -210,7 +210,7 @@ class Worker(object):
 
         self.disable_default_exception_handler = disable_default_exception_handler
 
-        if isinstance(exception_handlers, list):
+        if isinstance(exception_handlers, (list, tuple)):
             for handler in exception_handlers:
                 self.push_exc_handler(handler)
         elif exception_handlers is not None: