The UBRETRO facility was designed to calculate retro on benefit deductions when an employee receives a pay increase.  

;[Retro_Benefit_Calculations_Based_On_Earnings]
When an employee receives a retroactive pay increase, their benefit deductions may need to be recalculated to include the retro earnings.

The standard retroactive pay program [UPRETRO] will calculate the difference between the old and new wage rates and insert a pay line into the current period's pay header for each pay line that was evaluated.  

!Set Up Requirements
;[Pay_Component]
The program will only process for pay components attached to benefit plans that have a 'Retro' pay component attached to the 'Retro Pay' tab on [IPPC].  It is important to update the appropriate element if new 'retro' pay components are created

;[User_Calculation]:
In order to ensure that retro wages are used in the benefit calculation and are picked up in the correct period a UserCalc (as shown below) is required to capture the retro earnings.  This usercalc would be associated to the benefit plan [IBPN] as B0320


||LINE||CMD ||TYPE 1||OPERAND 1     ||OPER||TYPE 2||OPERAND 2   ||TYPE 3||OPERAND 3||IF GO TO||ELSE GO TO||NOTES          ||
| 100 | LET | V     | Base Earnings | EQ  | EC    | PT_STD_EARN |       |          |  110    |           | The purpose of this usercalc is to capture the earnings used in part time pension calculations.  Only retro earnings that have dates within the pay period should be processed.  Retro earnings should be used to calculate 'retro' benefits for the pay period they are earned in
| 110 | LET | V     | ELPL.BEGIN_DATE| EQ | $S     | PERIOD_START_DATE|  |          |  120    |           |
| 120 | LET | V     | ELPL.END_DATE  | EQ | $S     | PERIOD_END_DATE  |  |          |  130    |           |
| 130 | LET | V     | RETRO EARNINGS | ELPL|ET     | RETRO EARNINGS   |  |          |  140    |           |
| 140 | LET | V     | TOTAL EARNINGS | ADD |V      | BASE EARNINGS    |V | RETRO EARNINGS| 99999|         |
|99999| RET | V     | TOTAL EARNINGS |     |       |                  |  |          |         |           |