diff --git a/app/models/legislation/process/phase.rb b/app/models/legislation/process/phase.rb
new file mode 100644
index 000000000..1b8482a9a
--- /dev/null
+++ b/app/models/legislation/process/phase.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class Legislation::Process::Phase
+
+  def initialize(start_date, end_date)
+    @start_date = start_date
+    @end_date = end_date
+  end
+
+  def enabled?
+    @start_date.present? && @end_date.present?
+  end
+
+  def started?
+    enabled? && Date.current >= @start_date
+  end
+
+  def open?
+    started? && Date.current <= @end_date
+  end
+
+end
diff --git a/app/models/legislation/process/publication.rb b/app/models/legislation/process/publication.rb
new file mode 100644
index 000000000..10110f0e7
--- /dev/null
+++ b/app/models/legislation/process/publication.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class Legislation::Process::Publication
+
+  def initialize(publication_date)
+    @publication_date = publication_date
+  end
+
+  def enabled?
+    @publication_date.present?
+  end
+
+  def started?
+    enabled? && Date.current >= @publication_date
+  end
+
+  def open?
+    started?
+  end
+
+end