Key difference between Negative & Positive Time Managment

Question

Dear Consultants,
Please provide the information regarding the key differences between Negative Time Management & Positive Time Management.
Under what circumstances, we shouldn't recommend for Positive Time Management?
What are the major challenges for the client/end-user in using Positive Time Management?
What would be the duration required to implement Negative TM?
What would be the duration required to implement Positive TM?
What are the limitations of Negative TM?
Can a client opt for both Positive & Negative TM?
Regards,

Answer 1

See the re
Please provide the information regarding the key differences between Negative Time Management & Positive Time Management.
Time Management can be bifurcated types:
1. Positive Time (+ve Time) ? Positive time is plays the total role of workflow. All the processes related to time are automatically gets executed in the background. E.g., in our case it is done only partially to validate the attendance as per punches and other documents with shift timing and generate absence automatically in case of any discrepancy. 
2. Negative Time (-ve Time) ? Where the all time related activities like validation of the attendance, posting of absence for wage deduction etc are done manually. It has less level of integration among the different components of time management.
Negative Time Recording:
1. Records time deviations to Planned Working Time
2. Valid deviations include: Absences, Special Absences, On Call Duty, Overtime, Substitutions, Time off in lieu
3. Deviations are manually entered according to type & duration.
Positive Time Recording:
1. Records the attendance time of the employee
2. Records the deviation times of the employee
3. Valid attendances include: Training, Business Trips, Seminars, Overtime.
4. Attendances & deviations can be entered either:
- Front end system
- Manually.
Positive Time Management we have two types of recordings:
1. With Clock times - Complete time recording is captured
2. With out Clock times - Only Number of hourse worked is captured
Negetive time Management:
1. No clock times and assumed employee is working unless and until his or her absences are entered.
How is the process of getting data from time recording system to SAP how can we connect time recording system to SAP? How do we interface for positive time management?
To simplify:
We can consider two independent systems:
1. SAP System which contains Planned Working time
2. Time recorder system which contains the actual timings
Now as Time recorder system will contain all Clock in & Clock outs, the data needs to be uploaded to SAP system either as Scheduled job at back end or online in critical cases.
Based on our Time pair and other IMG settings in SAP System and comparison of IT2011 with IT2000, it generates values of OT,Absences etc etc.
This job can be effectively done in proper coordination with Basis, ABAPers and Time Consultants.
Under what circumstances, we shouldn't recommend for Positive Time Management?
>>>If the company has only salaried employees /exempt empls, where you dont record their OT, DT, etc..
>>>If Company has already another system which records time and can provide just total hours to be paid off in Regular / OT/ DT and also could update quotas
What are the major challenges for the client/end-user in using Positive Time Management?
>>>Integration between 3rd party system and SAP - Interface, logics
>>> Accruals and Quota
What would be the duration required to implement Negative TM?
>>> Few months *
What would be the duration required to implement Positive TM?
>>> Depends on volume diversity you have in time recording. May be between few months to a year.
What are the limitations of Negative TM?
>>> Detailed reporting may not be available in SAP and Posting Timesheets to CO/Billing would out of scope
>>> Also refer to SAP documents and presentation by clients in market place for more details
Can a client opt for both Positive & Negative TM?
>>> Yes you can