diff --git a/src/time-and-attendance/domains/services/overtime.service.ts b/src/time-and-attendance/domains/services/overtime.service.ts
index 60f4311..fc38f71 100644
--- a/src/time-and-attendance/domains/services/overtime.service.ts
+++ b/src/time-and-attendance/domains/services/overtime.service.ts
@@ -69,8 +69,8 @@ export class OvertimeService {
             const day = new Date(week_start.getTime() + i * 24 * 60 * 60 * 1000);
             days.push(day.toISOString().slice(0, 10));
         }
-
-        const week_total_hours = [...day_totals.values()].reduce((a, b) => a + b, 0);
+        //allows the weekly overtime to be calculate skiping the daily overtime
+        const week_total_hours = [...day_totals.values()].reduce((a, b) => a + Math.min(b, DAILY_LIMIT_HOURS), 0);
         const weekly_overtime = Math.max(0, week_total_hours - WEEKLY_LIMIT_HOURS);
 
         let running = 0;
@@ -93,9 +93,10 @@ export class OvertimeService {
             });
 
             daily_kept_sum += daily_kept;
-            running += day_hours;
+            // Math.min to use only the regular hours in the weekly overtime hours calcul
+            running += Math.min(day_hours, DAILY_LIMIT_HOURS); 
         }
-        const total_overtime = weekly_overtime + daily_kept_sum;
+        const total_overtime = Math.max(0, weekly_overtime - daily_kept_sum);
 
         return {
             success: true,
diff --git a/src/time-and-attendance/exports/csv-exports.utils.ts b/src/time-and-attendance/exports/csv-exports.utils.ts
index ea30769..19daff4 100644
--- a/src/time-and-attendance/exports/csv-exports.utils.ts
+++ b/src/time-and-attendance/exports/csv-exports.utils.ts
@@ -2,7 +2,6 @@ import { HolidayService } from "src/time-and-attendance/domains/services/holiday
 import { OvertimeService } from "src/time-and-attendance/domains/services/overtime.service";
 import { CsvRow, InternalCsvRow } from "src/time-and-attendance/exports/export-csv-options.dto";
 
-// You made a helper to pull bank codes from the db, but omitted to use it here... curious.
 const REGULAR = 1;
 const OVERTIME = 43;
 const VACATION = 109;
@@ -62,9 +61,9 @@ export const applyOvertimeRequalifications = async (
     overtime_service: OvertimeService,
 ): Promise<CsvRow[]> => {
     const result: InternalCsvRow[] = [];
-    //grouped by timesheet and week number
-    const grouped_rows = new Map<string, InternalCsvRow[]>();
 
+    //regroup rows by timesheet and week number
+    const grouped_rows = new Map<string, InternalCsvRow[]>();
     for (const row of consolidated_rows) {
         const key = `${row.timesheet_id}|${row.semaine_no}`;
         if (!grouped_rows.has(key)) {
@@ -74,35 +73,40 @@ export const applyOvertimeRequalifications = async (
     }
 
     for (const [, rows] of grouped_rows) {
-        //serves only to get the right timesheet_id and a date to find the "week_start of the getWeekOvertimeSummary"
+        //use the 1st row to determine wich timesheet and wich week number
         const representative = rows[0];
-        const summary = await overtime_service.getWeekOvertimeSummary(representative.timesheet_id, representative.shift_date);
-        if (!summary.success || summary.data.total_overtime <= 0) {
-            result.push(...rows);
-            continue;
-        }
-
-        const overtime_hours = summary.data.total_overtime;
+        const summary = await overtime_service.getWeekOvertimeSummary(
+            representative.timesheet_id,
+            representative.shift_date
+        );
+        //if it fails, push to rows as is
+        if (!summary.success) { result.push(...rows); continue; };
 
+        //combine daily and weekly overtime hours
+        const overtime_hours = summary.data.total_overtime + summary.data.daily_overtime_kept;
+        //if no overtime, push as is
+        if (overtime_hours <= 0) { result.push(...rows); continue; };
+        
+        //search for regular hour rows and deduct overtime hours from it
         const regular_hours = rows.find(r => r.code === REGULAR);
-        if (!regular_hours || !regular_hours.quantite_hre) {
-            result.push(...rows);
-            continue;
-        }
+        if (!regular_hours?.quantite_hre) { result.push(...rows); continue; };
 
+        //ensures that its not possible to deduct more hours than the amount of regular hours
         const deducted = Math.min(overtime_hours, regular_hours.quantite_hre);
+        const remaining = regular_hours.quantite_hre - deducted;
 
         for (const row of rows) {
             if (row === regular_hours) {
-                const remaining = regular_hours.quantite_hre - deducted;
+                //pushes the regular rows with subtracted overtime hours, if enough hours available
                 if (remaining > 0) {
                     result.push({ ...regular_hours, quantite_hre: remaining });
                 }
             } else {
+                //other rows are left unchanged
                 result.push(row);
             }
         }
-
+        //adds a new row with overtime hours deducted from the regular hours
         result.push({
             ...regular_hours,
             code: OVERTIME,