diff --git a/docs/build/doctrees/4_calculating-gross-pay.doctree b/docs/build/doctrees/4_calculating-gross-pay.doctree
index d768109..1c49f79 100644
Binary files a/docs/build/doctrees/4_calculating-gross-pay.doctree and b/docs/build/doctrees/4_calculating-gross-pay.doctree differ
diff --git a/docs/build/doctrees/environment.pickle b/docs/build/doctrees/environment.pickle
index 28f15a3..fe3b3ee 100644
Binary files a/docs/build/doctrees/environment.pickle and b/docs/build/doctrees/environment.pickle differ
diff --git a/docs/build/simplepdf/.buildinfo b/docs/build/simplepdf/.buildinfo
index 72e996d..1bf4982 100644
--- a/docs/build/simplepdf/.buildinfo
+++ b/docs/build/simplepdf/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file records the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: d93740cc276e21cc3546c307be71ad13
+config: 1d376f37dec2b5a8239f2cc27aceba8f
 tags: 62a1e7829a13fc7881b6498c52484ec0
diff --git a/docs/build/simplepdf/index.html b/docs/build/simplepdf/index.html
index e3aad4d..0213a4c 100644
--- a/docs/build/simplepdf/index.html
+++ b/docs/build/simplepdf/index.html
@@ -355,6 +355,11 @@
             4.2.5. Content Review
            </a>
           </li>
+          <li class="toctree-l3">
+           <a class="reference internal" href="#review-questions">
+            4.2.6. Review Questions
+           </a>
+          </li>
          </ul>
         </li>
         <li class="toctree-l2">
@@ -3939,6 +3944,35 @@ net pay.
            </div>
           </blockquote>
          </section>
+         <section id="review-questions">
+          <h3>
+           Review Questions
+           <a class="headerlink" href="#review-questions" title="Link to this heading">
+            &para;
+           </a>
+          </h3>
+          <blockquote>
+           <div>
+            <ol class="arabic simple">
+             <li>
+              <p>
+               What are the four categories of employment income?
+              </p>
+             </li>
+             <li>
+              <p>
+               List five methods an employer can use to pay earnings.
+              </p>
+             </li>
+             <li>
+              <p>
+               What are allowances? Provide an example of an allowance.
+              </p>
+             </li>
+            </ol>
+           </div>
+          </blockquote>
+         </section>
         </section>
         <section id="non-regular-earnings">
          <h2>
diff --git a/docs/source/4_calculating-gross-pay.rst b/docs/source/4_calculating-gross-pay.rst
index 18792e6..b5fa88d 100644
--- a/docs/source/4_calculating-gross-pay.rst
+++ b/docs/source/4_calculating-gross-pay.rst
@@ -78,10 +78,19 @@ Content Review
   * Earnings are dollar amounts the employer pays an employee for the work they perform.
   * Earnings are pensionable, insurable and taxable, and therefore subject to all statutory deductions.
   * Allowances are additional dollar amounts paid to employees for the use, or anticipated use, of their personal property for business purposes.
-  * Benefits are dollar values attributed to something the employer has either provided to an employee or paid for on an employee’s behalf.
+  * Benefits are dollar values attributed to something the employer has either provided to an employee or paid for on an employee's behalf.
   * Expense reimbursements are dollar amounts paid to employees to cover expenses that they incurred while performing their job; they are not considered in the calculation of an employee’s pay.
   * A regular payment has an established frequency, such as weekly-paid salary or wages.
   * A non-regular payment has no established frequency, for example, a bonus or a retroactive adjustment.
 
+Review Questions
+~~~~~~~~~~~~~~~~
+
+  #. What are the four categories of employment income?
+
+  #. List five methods an employer can use to pay earnings.
+
+  #. What are allowances? Provide an example of an allowance.
+
 Non-Regular Earnings
 -----------------------------------
\ No newline at end of file