diff --git a/lib/active_interaction/concerns/runnable.rb b/lib/active_interaction/concerns/runnable.rb
index a85c4a07..d65469f0 100644
--- a/lib/active_interaction/concerns/runnable.rb
+++ b/lib/active_interaction/concerns/runnable.rb
@@ -59,6 +59,28 @@ def valid?(*)
       super
     end
 
+    # @yield [outcome]
+    #
+    # @yieldparam outcome [Runnable]
+    #
+    # @return [Runnable]
+    def when_invalid
+      yield(self) if block_given? && invalid?
+
+      self
+    end
+
+    # @yield [result]
+    #
+    # @yieldparam result [Object]
+    #
+    # @return [Runnable]
+    def when_valid
+      yield(result) if block_given? && valid?
+
+      self
+    end
+
     private
 
     # @param other [Class] The other interaction.
diff --git a/spec/active_interaction/concerns/runnable_spec.rb b/spec/active_interaction/concerns/runnable_spec.rb
index 5dff01df..46c3b11a 100644
--- a/spec/active_interaction/concerns/runnable_spec.rb
+++ b/spec/active_interaction/concerns/runnable_spec.rb
@@ -146,6 +146,54 @@
     end
   end
 
+  describe '#when_invalid' do
+    include_context 'with #execute defined'
+
+    let(:outcome) { klass.run }
+
+    it 'returns self' do
+      expect(outcome.when_invalid).to equal outcome
+    end
+
+    context 'valid' do
+      it 'does not yield' do
+        expect { |b| outcome.when_invalid(&b) }.to_not yield_control
+      end
+    end
+
+    context 'invalid' do
+      include_context 'with a validator'
+
+      it 'yields' do
+        expect { |b| outcome.when_invalid(&b) }.to yield_with_args outcome
+      end
+    end
+  end
+
+  describe '#when_valid' do
+    include_context 'with #execute defined'
+
+    let(:outcome) { klass.run }
+
+    it 'returns self' do
+      expect(outcome.when_valid).to equal outcome
+    end
+
+    context 'invalid' do
+      include_context 'with a validator'
+
+      it 'does not yield' do
+        expect { |b| outcome.when_valid(&b) }.to_not yield_control
+      end
+    end
+
+    context 'valid' do
+      it 'yields' do
+        expect { |b| outcome.when_valid(&b) }.to yield_with_args outcome.result
+      end
+    end
+  end
+
   describe '.run' do
     let(:outcome) { klass.run }