diff --git a/VERSION b/VERSION
index c18d72b..100435b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.1
\ No newline at end of file
+0.8.2
diff --git a/lib/role_model/class_methods.rb b/lib/role_model/class_methods.rb
index 6c40e15..b965243 100644
--- a/lib/role_model/class_methods.rb
+++ b/lib/role_model/class_methods.rb
@@ -23,7 +23,11 @@ module RoleModel
 
       (valid_roles & sanitized_roles).inject(0) { |sum, role| sum + 2**valid_roles.index(role) }
     end
-    
+
+    def roles_from_mask(mask)
+      valid_roles.reject { |role| (mask.to_i & 2**valid_roles.index(role)).zero? }
+    end
+
     protected
 
     # :call-seq:
diff --git a/spec/role_model_spec.rb b/spec/role_model_spec.rb
index c22f038..bd2a7f4 100644
--- a/spec/role_model_spec.rb
+++ b/spec/role_model_spec.rb
@@ -51,6 +51,31 @@ describe RoleModel do
     end
   end
 
+  describe '.roles_from_mask(mask)' do
+    subject { model_class.roles_from_mask(mask) }
+
+    before do
+      model_class.instance_eval do
+        include RoleModel
+        roles :foo, :bar, :third
+      end
+    end
+
+    context 'when roles_mask is 0' do
+      let(:mask) { 0 }
+      it 'returns empty set' do
+        subject.should eq  []
+      end
+    end
+
+    context 'when valid roles_mask' do
+      let(:mask) { 3 }
+      it 'returns the list of roles associated with a roles_mask' do
+        subject.should eq  [:foo, :bar]
+      end
+    end
+  end
+
   [:roles, :role_symbols].each do |role_query_method|
     describe "##{role_query_method}" do
       let(:model) { model_class.new }