diff --git a/src/weekly_post.py b/src/weekly_post.py
index db74056..27b6a2b 100644
--- a/src/weekly_post.py
+++ b/src/weekly_post.py
@@ -4,6 +4,7 @@ to Slack every Monday at 7am ET, and emails the pay summary to payroll."""
 import logging
 import os
 from datetime import datetime, timedelta
+from decimal import Decimal
 from zoneinfo import ZoneInfo
 
 import boto3
@@ -40,13 +41,13 @@ def _add_shift_to_pay(schedule, breakdown, totals, date, day_name, shift_type="n
         "day": f"{day_name[:3]}{label_suffix}",
         "name": name,
         "extension": ext,
-        "rate": rate,
+        "rate": Decimal(str(rate)),
     })
 
     if name not in totals:
-        totals[name] = {"shifts": 0, "total": 0.0, "extension": ext, "rate": rate}
+        totals[name] = {"shifts": 0, "total": Decimal("0"), "extension": ext, "rate": Decimal(str(rate))}
     totals[name]["shifts"] += 1
-    totals[name]["total"] += rate
+    totals[name]["total"] += Decimal(str(rate))
 
 
 def _calculate_weekly_pay(schedule: ShiftSchedule, week_start: datetime) -> dict: