diff --git a/app/models/statement_of_work.rb b/app/models/statement_of_work.rb
index 8699050..766f32d 100644
--- a/app/models/statement_of_work.rb
+++ b/app/models/statement_of_work.rb
@@ -41,6 +41,8 @@ class StatementOfWork < ApplicationRecord
   # custom validation for date range
   validate :validate_date_range
 
+  scope :active_in_period, ->(start_date, end_date) { where('start_date <= ? AND end_date >= ?', end_date, start_date) }
+
   private
 
   def validate_date_range
diff --git a/spec/models/statement_of_work_spec.rb b/spec/models/statement_of_work_spec.rb
index b9daff0..a5b21dc 100644
--- a/spec/models/statement_of_work_spec.rb
+++ b/spec/models/statement_of_work_spec.rb
@@ -38,4 +38,43 @@
     it { should have_many(:requirements) }
     it { should have_many(:time_entries) }
   end
+
+  describe 'methods' do
+    context '#active_in_period' do
+      it 'should return true if dates are fully in the period' do
+        FactoryBot.create(:statement_of_work, :with_maintenance, start_date: '2020-01-01',
+                                                                 end_date: '2020-01-31')
+
+        expect(StatementOfWork.active_in_period('2020-01-05', '2020-01-28').length).to eq(1)
+      end
+
+      it 'should return true if start date is in the period but the end date is out' do
+        FactoryBot.create(:statement_of_work, :with_maintenance, start_date: '2020-01-01',
+                                                                 end_date: '2020-01-31')
+
+        expect(StatementOfWork.active_in_period('2020-01-05', '2020-02-28').length).to eq(1)
+      end
+
+      it 'should return true if start date is out of the period but the end date is in' do
+        FactoryBot.create(:statement_of_work, :with_maintenance, start_date: '2020-01-01',
+                                                                 end_date: '2020-01-31')
+
+        expect(StatementOfWork.active_in_period('2019-01-05', '2020-02-28').length).to eq(1)
+      end
+
+      it 'should return true if both dates cover the start and end date' do
+        FactoryBot.create(:statement_of_work, :with_maintenance, start_date: '2020-01-01',
+                                                                 end_date: '2020-01-31')
+
+        expect(StatementOfWork.active_in_period('2019-01-05', '2021-02-28').length).to eq(1)
+      end
+
+      it 'should return false if dates are fully out of the period' do
+        FactoryBot.create(:statement_of_work, :with_maintenance, start_date: '2020-01-01',
+                                                                 end_date: '2020-01-31')
+
+        expect(StatementOfWork.active_in_period('2020-02-01', '2020-02-28').length).to eq(0)
+      end
+    end
+  end
 end