1 files changed, 26 insertions, 0 deletions
diff --git a/product/client/server/domain/payroll/Vest.cs b/product/client/server/domain/payroll/Vest.cs
new file mode 100644
index 0000000..82b796a
--- /dev/null
+++ b/product/client/server/domain/payroll/Vest.cs
@@ -0,0 +1,26 @@
+using Gorilla.Commons.Utility;
+
+namespace presentation.windows.server.domain.payroll
+{
+    public class Vest
+    {
+        Fraction portion;
+        Date vesting_date;
+
+        public Vest(Fraction portion, Date vesting_date)
+        {
+            this.portion = portion;
+            this.vesting_date = vesting_date;
+        }
+
+        public Units unvested_units(Units total_units, Date date)
+        {
+            return expires_before(date) ? Units.Empty : total_units.reduced_by(portion);
+        }
+
+        bool expires_before(Date date)
+        {
+            return vesting_date.is_before(date);
+        }
+    }
+}
+\ No newline at end of file