diff --git a/app/models/relation_status.rb b/app/models/relation_status.rb
new file mode 100644
index 0000000..7f99988
--- /dev/null
+++ b/app/models/relation_status.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class RelationStatus < ApplicationRecord
+  CODENAME_RE = /\A[a-z][a-z0-9]*(_[a-z0-9]+)*\z/.freeze
+  FORMAT_RE = /\A[^[:space:]]+(.*[^[:space:]]+)?\z/.freeze
+
+  ###############
+  # Validations #
+  ###############
+
+  validates :codename,
+            presence: true,
+            length: { in: 3..36 },
+            format: CODENAME_RE,
+            uniqueness: { case_sensitive: false }
+
+  validates :name,
+            presence: true,
+            length: { in: 1..255 },
+            format: FORMAT_RE,
+            uniqueness: true
+
+  ###########
+  # Methods #
+  ###########
+
+  def to_param
+    codename
+  end
+end
diff --git a/db/migrate/20190921142404_create_relation_statuses.rb b/db/migrate/20190921142404_create_relation_statuses.rb
new file mode 100644
index 0000000..2f2dda0
--- /dev/null
+++ b/db/migrate/20190921142404_create_relation_statuses.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class CreateRelationStatuses < ActiveRecord::Migration[6.0]
+  include Partynest::Migration
+
+  def change
+    create_table :relation_statuses do |t|
+      t.timestamps null: false
+
+      t.string :codename, null: false, index: { unique: true }
+      t.string :name,     null: false, index: { unique: true }
+    end
+
+    constraint :relation_statuses, :codename, <<~SQL
+      is_codename(codename)
+    SQL
+
+    constraint :relation_statuses, :name, <<~SQL
+      is_good_small_text(name)
+    SQL
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index 5b119a5..5a7ae0c 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -680,6 +680,40 @@ CREATE SEQUENCE public.regional_offices_id_seq
 ALTER SEQUENCE public.regional_offices_id_seq OWNED BY public.regional_offices.id;
 
 
+--
+-- Name: relation_statuses; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE public.relation_statuses (
+    id bigint NOT NULL,
+    created_at timestamp(6) without time zone NOT NULL,
+    updated_at timestamp(6) without time zone NOT NULL,
+    codename character varying NOT NULL,
+    name character varying NOT NULL,
+    CONSTRAINT codename CHECK (public.is_codename((codename)::text)),
+    CONSTRAINT name CHECK (public.is_good_small_text((name)::text))
+);
+
+
+--
+-- Name: relation_statuses_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE public.relation_statuses_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: relation_statuses_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE public.relation_statuses_id_seq OWNED BY public.relation_statuses.id;
+
+
 --
 -- Name: relationship_statuses; Type: TABLE; Schema: public; Owner: -
 --
@@ -958,6 +992,13 @@ ALTER TABLE ONLY public.person_comments ALTER COLUMN id SET DEFAULT nextval('pub
 ALTER TABLE ONLY public.regional_offices ALTER COLUMN id SET DEFAULT nextval('public.regional_offices_id_seq'::regclass);
 
 
+--
+-- Name: relation_statuses id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.relation_statuses ALTER COLUMN id SET DEFAULT nextval('public.relation_statuses_id_seq'::regclass);
+
+
 --
 -- Name: relationship_statuses id; Type: DEFAULT; Schema: public; Owner: -
 --
@@ -1089,6 +1130,14 @@ ALTER TABLE ONLY public.regional_offices
     ADD CONSTRAINT regional_offices_pkey PRIMARY KEY (id);
 
 
+--
+-- Name: relation_statuses relation_statuses_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.relation_statuses
+    ADD CONSTRAINT relation_statuses_pkey PRIMARY KEY (id);
+
+
 --
 -- Name: relationship_statuses relationship_statuses_pkey; Type: CONSTRAINT; Schema: public; Owner: -
 --
@@ -1291,6 +1340,20 @@ CREATE UNIQUE INDEX index_regional_offices_on_federal_subject_id ON public.regio
 CREATE UNIQUE INDEX index_regional_offices_on_name ON public.regional_offices USING btree (name);
 
 
+--
+-- Name: index_relation_statuses_on_codename; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE UNIQUE INDEX index_relation_statuses_on_codename ON public.relation_statuses USING btree (codename);
+
+
+--
+-- Name: index_relation_statuses_on_name; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE UNIQUE INDEX index_relation_statuses_on_name ON public.relation_statuses USING btree (name);
+
+
 --
 -- Name: index_relationship_statuses_on_codename; Type: INDEX; Schema: public; Owner: -
 --
@@ -1586,6 +1649,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20190911081459'),
 ('20190914050858'),
 ('20190915085803'),
-('20190915131325');
+('20190915131325'),
+('20190921142404');
 
 
diff --git a/factories/relation_statuses.rb b/factories/relation_statuses.rb
new file mode 100644
index 0000000..5b162ba
--- /dev/null
+++ b/factories/relation_statuses.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :some_relation_status, class: RelationStatus do
+    codename { Faker::Internet.unique.username 3..36, %w[_] }
+    name { Faker::Company.unique.name }
+  end
+end
diff --git a/spec/models/relation_status_spec.rb b/spec/models/relation_status_spec.rb
new file mode 100644
index 0000000..ecd7051
--- /dev/null
+++ b/spec/models/relation_status_spec.rb
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe RelationStatus do
+  subject { create :some_relation_status }
+
+  describe '#to_param' do
+    specify do
+      expect(subject.to_param).to eq subject.codename
+    end
+  end
+
+  describe '#codename' do
+    def allow_value(*)
+      super.for :codename
+    end
+
+    it { is_expected.to validate_presence_of :codename }
+    it { is_expected.to validate_uniqueness_of(:codename).case_insensitive }
+
+    it do
+      is_expected.to validate_length_of(:codename).is_at_least(3).is_at_most(36)
+    end
+
+    it { is_expected.not_to allow_value nil }
+    it { is_expected.not_to allow_value '' }
+    it { is_expected.not_to allow_value ' ' * 3 }
+
+    it { is_expected.to allow_value Faker::Internet.username(3..36, %w[_]) }
+    it { is_expected.to allow_value 'foo_bar' }
+    it { is_expected.to allow_value 'foo123' }
+
+    it do
+      is_expected.not_to \
+        allow_value Faker::Internet.username(3..36, %w[_]).upcase
+    end
+
+    it { is_expected.not_to allow_value Faker::Internet.email }
+    it { is_expected.not_to allow_value '_foo' }
+    it { is_expected.not_to allow_value 'bar_' }
+    it { is_expected.not_to allow_value '1foo' }
+  end
+
+  describe '#name' do
+    def allow_value(*)
+      super.for :name
+    end
+
+    it { is_expected.to validate_presence_of :name }
+    it { is_expected.to validate_uniqueness_of :name }
+
+    it do
+      is_expected.to validate_length_of(:name).is_at_least(1).is_at_most(255)
+    end
+
+    it { is_expected.not_to allow_value nil }
+    it { is_expected.not_to allow_value '' }
+    it { is_expected.not_to allow_value ' ' }
+
+    it { is_expected.to allow_value Faker::Name.name }
+    it { is_expected.to allow_value Faker::Name.first_name }
+    it { is_expected.to allow_value 'Foo Bar' }
+
+    it { is_expected.not_to allow_value ' Foo' }
+    it { is_expected.not_to allow_value 'Foo ' }
+    it { is_expected.not_to allow_value "\tFoo" }
+    it { is_expected.not_to allow_value "Foo\t" }
+    it { is_expected.not_to allow_value "\nFoo" }
+    it { is_expected.not_to allow_value "Foo\n" }
+  end
+end