diff --git a/app/models/case_log.rb b/app/models/case_log.rb
index c058fb5f3..aae1d2741 100644
--- a/app/models/case_log.rb
+++ b/app/models/case_log.rb
@@ -129,6 +129,8 @@ class CaseLog < ApplicationRecord
   end
 
   def weekly_net_income
+    return unless earnings && incfreq
+
     case incfreq
     when "Weekly"
       earnings