diff --git a/docs/source/4_calculating-gross-pay.rst b/docs/source/4_calculating-gross-pay.rst
index 45621a4..45308ba 100644
--- a/docs/source/4_calculating-gross-pay.rst
+++ b/docs/source/4_calculating-gross-pay.rst
@@ -94,5 +94,7 @@ Review Questions
 
   #. What are benefits? Provide an example of a benefit.
 
+  #. What are expense reimbursements?
+
 Non-Regular Earnings
 -----------------------------------
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