diff --git a/app/models/rate.rb b/app/models/rate.rb
index 9cb19ca..5fd7da5 100644
--- a/app/models/rate.rb
+++ b/app/models/rate.rb
@@ -1,2 +1,5 @@
 class Rate < ActiveRecord::Base
+  belongs_to :project
+  belongs_to :user
+  has_many :time_entries
 end
diff --git a/spec/models/rate_spec.rb b/spec/models/rate_spec.rb
index de50117..279a1fd 100644
--- a/spec/models/rate_spec.rb
+++ b/spec/models/rate_spec.rb
@@ -1,2 +1,16 @@
 require File.dirname(__FILE__) + '/../spec_helper'
 
+describe Rate, 'associations' do
+  it 'should have many time entries' do
+    Rate.should have_association(:time_entries, :has_many)
+  end
+
+  it 'should belong to a single user' do
+    Rate.should have_association(:user, :belongs_to)
+  end
+
+  it 'should belong to a single project' do
+    Rate.should have_association(:project, :belongs_to)
+  end
+
+end