diff --git a/app/models/rate.rb b/app/models/rate.rb
index 2540200..c8c0a29 100644
--- a/app/models/rate.rb
+++ b/app/models/rate.rb
@@ -100,4 +100,9 @@ class Rate < ActiveRecord::Base
       raise Rate::InvalidParameterException.new("date must be a valid Date string (e.g. YYYY-MM-DD)")
     end
   end
+
+  if Rails.env.test?
+    public
+    generator_for :date_in_effect => Date.today
+  end
 end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 0c2ed3a..f8c9ed7 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -7,3 +7,4 @@ en:
   rate_error_user_not_found: User not found
   rate_label_set_rate: Set Rate
   rate_label_default: Default Rate
+  rate_cost: Cost
diff --git a/init.rb b/init.rb
index 165f46e..4720b83 100644
--- a/init.rb
+++ b/init.rb
@@ -31,7 +31,9 @@ Redmine::Plugin.register :redmine_rate do
   permission :view_rate, { }
 end
 
+require 'redmine_rate/hooks/timesheet_hook_helper'
 require 'redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook'
 require 'redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook'
 require 'redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook'
 require 'redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook'
+require 'redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook'
diff --git a/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook.rb b/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook.rb
new file mode 100644
index 0000000..8113526
--- /dev/null
+++ b/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook.rb
@@ -0,0 +1,11 @@
+module RedmineRate
+  module Hooks
+    class PluginTimesheetViewTimesheetsReportHeaderTagsHook < Redmine::Hook::ViewListener
+      def plugin_timesheet_view_timesheets_report_header_tags(context={})
+        return content_tag(:style,
+                           'tr.missing-rate td.cost { color: red; }',
+                           :type => 'text/css')
+      end
+    end
+  end
+end
diff --git a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook.rb b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook.rb
index 8edde5b..3cd739c 100644
--- a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook.rb
+++ b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook.rb
@@ -2,7 +2,7 @@ module RedmineRate
   module Hooks
     class PluginTimesheetViewsTimesheetGroupHeaderHook < Redmine::Hook::ViewListener
       def plugin_timesheet_views_timesheet_group_header(context={})
-        return ''
+        return content_tag(:th, l(:rate_cost), :width => '8%')
       end
     end
   end
diff --git a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook.rb b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook.rb
index 4254428..e99d57d 100644
--- a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook.rb
+++ b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook.rb
@@ -1,9 +1,18 @@
 module RedmineRate
   module Hooks
     class PluginTimesheetViewsTimesheetTimeEntryHook < Redmine::Hook::ViewListener
+      include TimesheetHookHelper
+      
       def plugin_timesheet_views_timesheet_time_entry(context={})
-        return ''
+        cost = cost_item(context[:time_entry])
+        if cost
+          td_cell(number_to_currency(cost))
+        else
+          td_cell('&nbsp;')
+        end
+
       end
+
     end
   end
 end
diff --git a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook.rb b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook.rb
index 67f57a1..5ad9108 100644
--- a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook.rb
+++ b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook.rb
@@ -1,8 +1,16 @@
 module RedmineRate
   module Hooks
     class PluginTimesheetViewsTimesheetTimeEntrySumHook < Redmine::Hook::ViewListener
+      include TimesheetHookHelper
+      
       def plugin_timesheet_views_timesheet_time_entry_sum(context={})
-        return ''
+        time_entries = context[:time_entries]
+        costs = time_entries.collect {|time_entry| cost_item(time_entry)}.compact.sum
+        if costs >= 0
+          return td_cell(number_to_currency(costs))
+        else
+          return td_cell('&nbsp;')
+        end
       end
     end
   end
diff --git a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook.rb b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook.rb
index 0b4ea33..af953ce 100644
--- a/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook.rb
+++ b/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook.rb
@@ -1,8 +1,20 @@
 module RedmineRate
   module Hooks
     class PluginTimesheetViewsTimesheetsTimeEntryRowClassHook < Redmine::Hook::ViewListener
+      include TimesheetHookHelper
+
       def plugin_timesheet_views_timesheets_time_entry_row_class(context={})
-        return ''
+        time_entry = context[:time_entry]
+        return "" unless time_entry
+
+        cost = cost_item(time_entry)
+        return "" unless cost # Permissions
+        
+        if cost && cost <= 0
+          return "missing-rate"
+        else
+          return ""
+        end
       end
     end
   end
diff --git a/lib/redmine_rate/hooks/timesheet_hook_helper.rb b/lib/redmine_rate/hooks/timesheet_hook_helper.rb
new file mode 100644
index 0000000..6f7aa2d
--- /dev/null
+++ b/lib/redmine_rate/hooks/timesheet_hook_helper.rb
@@ -0,0 +1,14 @@
+module TimesheetHookHelper
+  # Returns the cost of a time entry, checking user permissions
+  def cost_item(time_entry)
+    if User.current.logged? && (User.current.allowed_to?(:view_rate, time_entry.project) || User.current.admin?)
+      return time_entry.cost
+    else
+      return nil
+    end
+  end
+
+  def td_cell(html)
+    return content_tag(:td, html, :align => 'right', :class => 'cost')
+  end
+end
diff --git a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook_test.rb b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook_test.rb
new file mode 100644
index 0000000..cedbc5f
--- /dev/null
+++ b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_view_timesheets_report_header_tags_hook_test.rb
@@ -0,0 +1,26 @@
+require File.dirname(__FILE__) + '/../../../../test_helper'
+
+class RedmineRate::Hooks::PluginTimesheetViewTimesheetsReportHeaderTagsTest < ActionController::TestCase
+  include Redmine::Hook::Helper
+
+  def controller
+    @controller ||= ApplicationController.new
+    @controller.response ||= ActionController::TestResponse.new
+    @controller
+  end
+
+  def request
+    @request ||= ActionController::TestRequest.new
+  end
+  
+  def hook(args={})
+    call_hook :plugin_timesheet_view_timesheets_report_header_tags, args
+  end
+
+  context "#plugin_timesheet_view_timesheets_report_header_tags" do
+    should "return a css string" do
+      @response.body = hook
+      assert_select "style", :text => /missing-rate/
+    end
+  end
+end
diff --git a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook_test.rb b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook_test.rb
index 30d51f6..5b2f633 100644
--- a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook_test.rb
+++ b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_group_header_hook_test.rb
@@ -18,9 +18,9 @@ class RedmineRate::Hooks::PluginTimesheetViewsTimesheetGroupHeaderTest < ActionC
   end
 
   context "#plugin_timesheet_views_timesheet_group_header" do
-    should "return an empty string" do
+    should "render the cost table header" do
       @response.body = hook
-      assert @response.body.blank?
+      assert_select "th", :text => "Cost"
     end
   end
 end
diff --git a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook_test.rb b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook_test.rb
index 3dcfb94..e924055 100644
--- a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook_test.rb
+++ b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_hook_test.rb
@@ -18,9 +18,30 @@ class RedmineRate::Hooks::PluginTimesheetViewsTimesheetTimeEntryTest < ActionCon
   end
 
   context "#plugin_timesheet_views_timesheet_time_entry" do
-    should "return an empty string" do
-      @response.body = hook
-      assert @response.body.blank?
+    context "for users with view rate permission" do
+      should "render a cost cell showing the cost for the time entry" do
+        User.current = User.generate!(:admin => true)
+        rate = Rate.generate!(:amount => 100)
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => rate)
+        
+        @response.body = hook(:time_entry => time_entry)
+
+        assert_select 'td', :text => "$200.00"
+        
+      end
     end
+
+    context "for users without view rate permission" do
+      should "render an empty cost cell" do
+        User.current = nil
+        rate = Rate.generate!(:amount => 100)
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => rate)
+        
+        @response.body = hook(:time_entry => time_entry)
+
+        assert_select 'td', :text => '&nbsp;'
+        
+      end
+    end    
   end
 end
diff --git a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook_test.rb b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook_test.rb
index 7b714ae..3659b9b 100644
--- a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook_test.rb
+++ b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheet_time_entry_sum_hook_test.rb
@@ -18,9 +18,31 @@ class RedmineRate::Hooks::PluginTimesheetViewsTimesheetTimeEntrySumTest < Action
   end
 
   context "#plugin_timesheet_views_timesheet_time_entry_sum" do
-    should "return an empty string" do
-      @response.body = hook
-      assert @response.body.blank?
+    context "for users with view rate permission" do
+      should "render a cost cell showing the total cost for the time entries" do
+        User.current = User.generate!(:admin => true)
+        rate = Rate.generate!(:amount => 100)
+        time_entry1 = TimeEntry.generate!(:hours => 2, :rate => rate)
+        time_entry2 = TimeEntry.generate!(:hours => 10, :rate => rate)
+        
+        @response.body = hook(:time_entries => [time_entry1, time_entry2])
+
+        assert_select 'td', :text => "$1,200.00"
+        
+      end
     end
+
+    context "for users without view rate permission" do
+      should "render an empty cost cell" do
+        User.current = nil
+        rate = Rate.generate!(:amount => 100)
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => rate)
+        
+        @response.body = hook(:time_entries => [time_entry])
+
+        assert_select 'td', :text => '$0.00'
+        
+      end
+    end    
   end
 end
diff --git a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook_test.rb b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook_test.rb
index 57c5ac6..97dec90 100644
--- a/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook_test.rb
+++ b/test/unit/lib/redmine_rate/hooks/plugin_timesheet_views_timesheets_time_entry_row_class_hook_test.rb
@@ -18,9 +18,43 @@ class RedmineRate::Hooks::PluginTimesheetViewsTimesheetsTimeEntryRowClassTest <
   end
 
   context "#plugin_timesheet_views_timesheets_time_entry_row_class" do
-    should "return an empty string" do
-      @response.body = hook
-      assert @response.body.blank?
+    context "for users with view rate permission" do
+      setup do
+        User.current = User.generate!(:admin => true)
+      end
+
+      should "render a missing rate css class if the time entry has no cost" do
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => nil)
+
+        assert_equal "missing-rate", hook(:time_entry => time_entry)
+      end
+
+      should "render nothing if the time entry has a cost" do
+        rate = Rate.generate!(:amount => 100)
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => rate)
+
+        assert_equal "", hook(:time_entry => time_entry)
+      end
     end
+
+    context "for users without view rate permission" do
+      setup do
+        User.current = nil
+      end
+
+      should "render nothing if the time entry has no cost" do
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => nil)
+
+        assert_equal "", hook(:time_entry => time_entry)
+      end
+
+      should "render nothing if the time entry has a cost" do
+        rate = Rate.generate!(:amount => 100)
+        time_entry = TimeEntry.generate!(:hours => 2, :rate => rate)
+
+        assert_equal "", hook(:time_entry => time_entry)
+      end
+    end    
+
   end
 end