diff --git a/app/models/relationship.rb b/app/models/relationship.rb
index 339b3da..7d4fc39 100644
--- a/app/models/relationship.rb
+++ b/app/models/relationship.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class Relationship < ApplicationRecord
+  enum status: %i[unrelated supporter member excluded]
+
   ################
   # Associations #
   ################
@@ -21,4 +23,6 @@ class Relationship < ApplicationRecord
             }
 
   validates :active_since, presence: true
+
+  validates :status, presence: true
 end
diff --git a/db/migrate/20190605022109_add_status_to_relationships.rb b/db/migrate/20190605022109_add_status_to_relationships.rb
new file mode 100644
index 0000000..bae753e
--- /dev/null
+++ b/db/migrate/20190605022109_add_status_to_relationships.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class AddStatusToRelationships < ActiveRecord::Migration[6.0]
+  def change
+    # rubocop:disable Rails/NotNullColumn
+    add_column :relationships, :status, :integer, null: false
+    # rubocop:enable Rails/NotNullColumn
+    add_index  :relationships, :status
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 4a7fbec..a66fb69 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_06_05_012813) do
+ActiveRecord::Schema.define(version: 2019_06_05_022109) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -134,9 +134,11 @@ ActiveRecord::Schema.define(version: 2019_06_05_012813) do
     t.bigint "regional_office_id", null: false
     t.integer "number", null: false
     t.date "active_since", null: false
+    t.integer "status", null: false
     t.index ["active_since"], name: "index_relationships_on_active_since"
     t.index ["person_id", "number"], name: "index_relationships_on_person_id_and_number", unique: true
     t.index ["regional_office_id"], name: "index_relationships_on_regional_office_id"
+    t.index ["status"], name: "index_relationships_on_status"
   end
 
   create_table "resident_registrations", force: :cascade do |t|
diff --git a/factories/relationships.rb b/factories/relationships.rb
index 4d4b212..505f220 100644
--- a/factories/relationships.rb
+++ b/factories/relationships.rb
@@ -10,9 +10,19 @@ FactoryBot.define do
     sequence :active_since do |n|
       Date.new rand((10 * n)...(11 * n)), rand(1..12), rand(1..28)
     end
+
+    status { :supporter }
   end
 
-  factory :member_relationship, parent: :supporter_relationship
-  factory :excluded_supporter_relationship, parent: :supporter_relationship
-  factory :excluded_member_relationship, parent: :member_relationship
+  factory :member_relationship, parent: :supporter_relationship do
+    status { :member }
+  end
+
+  factory :excluded_supporter_relationship, parent: :supporter_relationship do
+    status { :excluded }
+  end
+
+  factory :excluded_member_relationship, parent: :member_relationship do
+    status { :excluded }
+  end
 end
diff --git a/spec/models/relationship_spec.rb b/spec/models/relationship_spec.rb
index 351cf5a..0f6b03d 100644
--- a/spec/models/relationship_spec.rb
+++ b/spec/models/relationship_spec.rb
@@ -24,4 +24,8 @@ RSpec.describe Relationship do
   describe '#active_since' do
     it { is_expected.to validate_presence_of :active_since }
   end
+
+  describe '#status' do
+    it { is_expected.to validate_presence_of :status }
+  end
 end