Issue with Unpaid Absence for Rotating Shift Employees with Averaging Hours

Question

We run a biweekly payroll where full time employees are paid based on an 80 hr work shift per pay period.    We have a requirement where employees in production are on a rotating shift.  They may work 80, 88 or 72 hrs per pay period because  their work schedule rule is defined this way.  However, regardless if they worked 80, 88 or 72 hrs, these employees should still be paid based on 80 hrs of work (overtime will be paid extra).  Currently, our system handles it this way.  
However, a problem comes up when the employee has an unpaid absence for the period. The WT  /801 is calculating a factor that results in incorrect pay.  For example, if an employee has an hourly rate of $10 (biweekly rate of $ 800), with a work shift of 88 hrs and 24 hrs unpaid absence for the period, the rule KPPF is calculating the factor (/801) to be: 64/88 = .7272, and therby paying 581.76 ($800 x .7272).   The calculation of /801 comes from the formula:
      total hrs worked (88) - unpaid hrs (24)
                total hrs worked (88)
Given our requirement, the correction calculation for the factor  should be:
  80 - 24    = .7
     80
and the correct pay should be $560 ($800 x .7)
I tried modifying rule KPPF, along with KPP0 and KPP1 and was able to make it work to fit our requirements.  However, the modification I made only works when there is only 1 WPBP record.  If there are multiple WPBP records , possibly caused by an personnel action , change of IT0007 or  IT0008 in the middle of the pay period,  it becomes way too complicated to modify the rule to handle each and every scenario.
If anyone has come across a similar requirement, I would really appreciate if you could assist on how this should be handled.
Thanks.
Malou Navera

Answer 1

Thanks Amosha,  Here is the PCR for calculating the factor during an unpaid absence:
KPP1 Determine partial period factors (subrule)
      /801 Partial monthly factor 1
        RTE=TSSOLL Set
        RTE-TSAU** Subtraction
        RTE*KGENAU Multiplication
        RTE/TSDIVI Division
        ADDWT *    OT   Output table
Here are the table values for an employee who is on an 88 hr shift, with 52 hrs of unpaid absence:
Total period parameter
  Individual divisors for total period
  GSDIVI:          88.00
  GADIVI:          11.00
  GKDIVI:          14.00
Partial period parameter for WPBP period 01
  Individual divisors for partial period in WPBP period 01
  TSDIVI:          88.00
  TADIVI:          11.00
  TKDIVI:          14.00
Planned values for period from 01/25/2010 To 02/07/2010
DWS class: 3           Day type: 0             PHoliday cl: 0
TSSOLL:         88.00  GSSOLL:      88.00
TASOLL:         11.00  GASOLL:      11.00
TKSOLL:         14.00  GKSOLL:      14.00
Table PARTA
  PParType  No  Valid from  Valid to    KAU**   AAU**   SAU**   KAP**   AAP**   SAP**   KAX**   AAX**   SAX**
  T         01  01/25/2010  02/07/2010    8.00    6.00       52.00     2.00     2.00      20.00    0.00       0.00      0.00
  G         00  01/25/2010  02/07/2010    8.00    6.00      52.00     2.00     2.00      20.00    0.00       0.00      0.00
In this scenario, /801 was calculated at 40,909.09, it should be 35,000.
Hoping to hear from you soon.
Thanks.
Malou