diff --git a/db/migrate/20140814125947_add_new_fields_to_public_institution.rb b/db/migrate/20140814125947_add_new_fields_to_public_institution.rb
new file mode 100644
index 0000000..6b8f668
--- /dev/null
+++ b/db/migrate/20140814125947_add_new_fields_to_public_institution.rb
@@ -0,0 +1,11 @@
+class AddNewFieldsToPublicInstitution < ActiveRecord::Migration
+  def up
+    add_column :institutions, :sisp, :boolean, :default => false
+    remove_column :institutions, :juridical_nature
+  end
+
+  def down
+    remove_column :institutions, :sisp
+    add_column :institutions, :juridical_nature, :string 
+  end
+end
diff --git a/db/migrate/20140814131606_create_juridical_natures_table.rb b/db/migrate/20140814131606_create_juridical_natures_table.rb
new file mode 100644
index 0000000..2946e9a
--- /dev/null
+++ b/db/migrate/20140814131606_create_juridical_natures_table.rb
@@ -0,0 +1,13 @@
+class CreateJuridicalNaturesTable < ActiveRecord::Migration
+  def up
+    create_table :juridical_natures do |t|
+      t.string :name
+    end
+    
+    SoftwareHelper.create_list_with_file("plugins/mpog_software/public/static/juridical_nature.txt", JuridicalNature)
+  end
+
+  def down
+    drop_table :juridical_natures 
+  end
+end
diff --git a/db/migrate/20140814134827_add_juridical_nature_reference_to_institutions_table.rb b/db/migrate/20140814134827_add_juridical_nature_reference_to_institutions_table.rb
new file mode 100644
index 0000000..03baff8
--- /dev/null
+++ b/db/migrate/20140814134827_add_juridical_nature_reference_to_institutions_table.rb
@@ -0,0 +1,13 @@
+class AddJuridicalNatureReferenceToInstitutionsTable < ActiveRecord::Migration
+  def up
+    change_table :institutions do |t|
+      t.references :juridical_nature
+    end
+  end
+
+  def down
+    change_table :institutions do |t|
+      t.remove_references :juridical_nature
+    end
+  end
+end
diff --git a/lib/juridical_nature.rb b/lib/juridical_nature.rb
new file mode 100644
index 0000000..f53c57d
--- /dev/null
+++ b/lib/juridical_nature.rb
@@ -0,0 +1,8 @@
+class JuridicalNature < ActiveRecord::Base
+  attr_accessible :name
+
+  has_many :institutions
+
+  validates_presence_of :name
+  validates_uniqueness_of :name
+end
diff --git a/public/static/juridical_nature.txt b/public/static/juridical_nature.txt
new file mode 100644
index 0000000..da5b1fd
--- /dev/null
+++ b/public/static/juridical_nature.txt
@@ -0,0 +1,8 @@
+Administração Direta
+Autarquia
+Empresa Pública
+Fundação
+Órgão Autônomo
+Sociedade
+Sociedade Civil
+Sociedade de Economia Mista
--
libgit2 0.21.2