diff --git a/app/controllers/api/submissions_controller.rb b/app/controllers/api/submissions_controller.rb
index 002d96e2..64642a61 100644
--- a/app/controllers/api/submissions_controller.rb
+++ b/app/controllers/api/submissions_controller.rb
@@ -77,7 +77,7 @@ module Api
 
       json = submissions.flat_map do |submission|
         submission.submitters.map do |s|
-          Submitters::SerializeForApi.call(s, with_documents: false, with_urls: true)
+          Submitters::SerializeForApi.call(s, with_documents: false, with_urls: true, params:)
         end
       end
 
diff --git a/app/controllers/api/submitters_controller.rb b/app/controllers/api/submitters_controller.rb
index 6ee1ec35..bc1a962b 100644
--- a/app/controllers/api/submitters_controller.rb
+++ b/app/controllers/api/submitters_controller.rb
@@ -23,7 +23,9 @@ module Api
       )
 
       render json: {
-        data: submitters.map { |s| Submitters::SerializeForApi.call(s, with_template: true, with_events: true) },
+        data: submitters.map do |s|
+                Submitters::SerializeForApi.call(s, with_template: true, with_events: true, params:)
+              end,
         pagination: {
           count: submitters.size,
           next: submitters.last&.id,
@@ -35,7 +37,7 @@ module Api
     def show
       Submissions::EnsureResultGenerated.call(@submitter) if @submitter.completed_at?
 
-      render json: Submitters::SerializeForApi.call(@submitter, with_template: true, with_events: true)
+      render json: Submitters::SerializeForApi.call(@submitter, with_template: true, with_events: true, params:)
     end
 
     def update
@@ -73,7 +75,8 @@ module Api
 
       render json: Submitters::SerializeForApi.call(@submitter, with_template: false,
                                                                 with_urls: true,
-                                                                with_events: false)
+                                                                with_events: false,
+                                                                params:)
     end
 
     def submitter_params
diff --git a/lib/submissions/serialize_for_api.rb b/lib/submissions/serialize_for_api.rb
index 39016394..19efac2c 100644
--- a/lib/submissions/serialize_for_api.rb
+++ b/lib/submissions/serialize_for_api.rb
@@ -21,7 +21,7 @@ module Submissions
     def call(submission, submitters = nil, params = {})
       submitters ||= submission.submitters.preload(documents_attachments: :blob, attachments_attachments: :blob)
 
-      serialized_submitters = submitters.map { |submitter| Submitters::SerializeForApi.call(submitter) }
+      serialized_submitters = submitters.map { |submitter| Submitters::SerializeForApi.call(submitter, params:) }
 
       json = submission.as_json(
         SERIALIZE_PARAMS.deep_merge(
diff --git a/lib/submitters/serialize_for_api.rb b/lib/submitters/serialize_for_api.rb
index 65a64090..d7030bce 100644
--- a/lib/submitters/serialize_for_api.rb
+++ b/lib/submitters/serialize_for_api.rb
@@ -10,7 +10,7 @@ module Submitters
 
     module_function
 
-    def call(submitter, with_template: false, with_events: false, with_documents: true, with_urls: false)
+    def call(submitter, with_template: false, with_events: false, with_documents: true, with_urls: false, params: {})
       ActiveRecord::Associations::Preloader.new(
         records: [submitter],
         associations: if with_documents
@@ -22,6 +22,10 @@ module Submitters
 
       additional_attrs = {}
 
+      if params[:include].to_s.include?('fields')
+        additional_attrs['fields'] = SerializeForWebhook.build_fields_array(submitter)
+      end
+
       additional_attrs['values'] = SerializeForWebhook.build_values_array(submitter)
       additional_attrs['documents'] = SerializeForWebhook.build_documents_array(submitter) if with_documents
       additional_attrs['preferences'] = submitter.preferences.except('default_values')
diff --git a/lib/submitters/serialize_for_webhook.rb b/lib/submitters/serialize_for_webhook.rb
index d49a7a91..47de6832 100644
--- a/lib/submitters/serialize_for_webhook.rb
+++ b/lib/submitters/serialize_for_webhook.rb
@@ -61,6 +61,28 @@ module Submitters
       end
     end
 
+    def build_fields_array(submitter)
+      fields = submitter.submission.template_fields.presence || submitter.submission.template.fields
+      attachments_index = submitter.attachments.index_by(&:uuid)
+      submitter_field_counters = Hash.new { 0 }
+
+      fields.filter_map do |field|
+        submitter_field_counters[field['type']] += 1
+
+        next if field['submitter_uuid'] != submitter.uuid
+        next if field['type'] == 'heading'
+
+        field_name =
+          field['name'].presence || "#{field['type'].titleize} Field #{submitter_field_counters[field['type']]}"
+
+        next if !submitter.values.key?(field['uuid']) && !submitter.completed_at?
+
+        value = fetch_field_value(field, submitter.values[field['uuid']], attachments_index)
+
+        { name: field_name, uuid: field['uuid'], value: }
+      end
+    end
+
     def build_documents_array(submitter)
       submitter.documents.map do |attachment|
         { name: attachment.filename.base, url: rails_storage_proxy_url(attachment) }