diff --git a/ReportImp/LebenshilfeBadKreuznach/Invoicing/CustomCalculations.cs b/ReportImp/LebenshilfeBadKreuznach/Invoicing/CustomCalculations.cs
new file mode 100644
index 000000000..eab4c27b6
--- /dev/null
+++ b/ReportImp/LebenshilfeBadKreuznach/Invoicing/CustomCalculations.cs
@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
+using BeWo.Data.Access;
+using BeWo.Data.Entities;
+using BeWo.Service.DCEntityMapper;
+using BeWo.Service.Plugins;
+using BS.Shared;
+using BS.Shared.Core;
+using BS.Shared.DataContracts;
+using BS.Shared.Extensions;
+using BS.Shared.Services;
+
+namespace LebenshilfeBadKreuznach.Invoicing
+{
+	public class CustomCalculations : BS.Shared.Services.Calculations
+    {
+		public override decimal GetHoursNotBillableDueToAbsenceTimes(SupportConceptApprovalPeriodDC scap,
+																List<CostRatePeriodDC> costRates,
+																List<ServiceRecordDC> records,
+																Dictionary<DateTimeSpan, decimal> absenceTimes,
+																bool doRemoveFromRecordsList,
+																bool doCrop)
+		{
+			if (scap.ApprovedFixedAmount.HasValue)
+			{
+				return 0m;
+			}
+
+			var hoursNotBillableAbsence = 0m;
+			foreach (var iRecord in records.ToList())
+			{
+				//if (!iRecord.Start.Value.InBetween(scap.Span, true))
+				//{
+				//	if (doRemoveFromRecordsList)
+				//	{
+				//		records.Remove(iRecord);
+				//	}
+
+				//	continue;
+				//}
+
+				var absenceSpan = absenceTimes.FirstOrDefault(i => iRecord.Start.Value.InBetween(i.Key, true)).Key;
+
+				if (absenceSpan != null)
+				{
+					var rd = base.GetBillableDurationInMinutes(iRecord, false);
+
+					if (absenceTimes[absenceSpan] == 0)
+					{
+						if (doRemoveFromRecordsList)
+						{
+							records.Remove(iRecord);
+						}
+
+						hoursNotBillableAbsence += rd / 60m;
+						continue;
+					}
+
+					if (absenceTimes[absenceSpan] - rd >= 0)
+					{
+						absenceTimes[absenceSpan] -= rd;
+						continue;
+					}
+
+					hoursNotBillableAbsence += (rd - absenceTimes[absenceSpan]) / 60;
+
+					if (!doCrop)
+					{
+						if (doRemoveFromRecordsList)
+						{
+							records.Remove(iRecord);
+						}
+
+						continue;
+					}
+
+					hoursNotBillableAbsence += (rd - absenceTimes[absenceSpan]) / 60;
+					iRecord.End = iRecord.Start.Value.AddMinutes(Convert.ToDouble(absenceTimes[absenceSpan]));
+
+					var minuteInterval = costRates.GetCostRatePeriodForDate(CostRatePeriodType.MinutesIntervall, iRecord.Start.Value);
+					var duration = Convert.ToDecimal((iRecord.End - iRecord.Start).Value.TotalMinutes);
+
+					//###CB 5min
+					if (minuteInterval != null && minuteInterval.CostRateValue.HasValue && minuteInterval.CostRateValue.Value > 0)
+					{
+						iRecord.RoundedDuration = GetRoundedDuration((int)minuteInterval.CostRateValue.Value, duration);
+					}
+
+					absenceTimes[absenceSpan] = 0;
+				}
+			}
+
+			return hoursNotBillableAbsence;
+		}
+	}
+}