diff --git a/docs/source/4_calculating-gross-pay.rst b/docs/source/4_calculating-gross-pay.rst
index c949fb4..453d886 100644
--- a/docs/source/4_calculating-gross-pay.rst
+++ b/docs/source/4_calculating-gross-pay.rst
@@ -48,6 +48,16 @@ The most common pay period frequencies are:
   * Semi-monthly 24 pay periods a year - 15% of employers
   * Monthly 12 pay periods a year - 7% of employers
 
+An organization can establish different pay frequencies for different groups of employees.
+
+.. admonition:: Example
+
+    Galaxy Ltd. has three pay period frequencies:
+
+      Part-time employees Paid every Thursday (weekly)
+      Full-time employees Paid every other Friday (bi-weekly)
+      Executives Paid on the last business day of the month (monthly)
+
 Types of Regular Earnings
 -------------------------------------