diff --git a/config/locales/en.yml b/config/locales/en.yml
index d6ad08b..38a22ee 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -2,3 +2,4 @@ en:
   overhead_field_billing_status: Billing Status
   overhead_field_billable_value: Billable Value
   overhead_field_overhead_value: Overhead Value
+  overhead_field_billable: Billable
diff --git a/init.rb b/init.rb
index 8940541..2d2a84d 100644
--- a/init.rb
+++ b/init.rb
@@ -9,6 +9,8 @@ Dispatcher.to_prepare do
   TimeEntryActivity.send(:include, OverheadTimeEntryActivityPatch)
 end
 
+require 'overhead_timesheet_hook'
+
 Redmine::Plugin.register :redmine_overhead do
   name 'Overhead plugin'
   author 'Eric Davis'
diff --git a/lib/overhead_timesheet_hook.rb b/lib/overhead_timesheet_hook.rb
new file mode 100644
index 0000000..22f5e67
--- /dev/null
+++ b/lib/overhead_timesheet_hook.rb
@@ -0,0 +1,6 @@
+class OverheadTimesheetHook < Redmine::Hook::ViewListener
+
+  def plugin_timesheet_views_timesheet_group_header(context={})
+    return content_tag(:th, l(:overhead_field_billable))
+  end
+end
diff --git a/spec/lib/overhead_timesheet_hook_spec.rb b/spec/lib/overhead_timesheet_hook_spec.rb
new file mode 100644
index 0000000..39b097a
--- /dev/null
+++ b/spec/lib/overhead_timesheet_hook_spec.rb
@@ -0,0 +1,7 @@
+require File.dirname(__FILE__) + '/../spec_helper'
+
+describe OverheadTimesheetHook, "#plugin_timesheet_views_timesheet_group_header" do
+  it 'should add a Billable column to the table' do
+    OverheadTimesheetHook.instance.plugin_timesheet_views_timesheet_group_header.should eql('<th>Billable</th>')
+  end
+end