Tag: Mathematical Proof

By Posted on Posted in 2005 PDRS, AMA Guides, Ogilvie, Technobabble, Wage Loss, Workers Compensation Resources No Comments Tagged with , , , , , , , , , , , , , , , , , , ,
Back to the drawing board
Back to the drawing board

DOWNLOAD THE MATHEMATICAL PROOF AS A PDF!

A little while ago William S. Morris, an Applicant’s attorney, told me that the Ogilvie adjustment calculation could be further simplified.  ((Photo courtesy of Dahveed76)) He suggested the following ((I’m paraphrasing here)) :

  1. Earnings Loss ((PIESSE = Post Injury Earnings of Similarly Situated Employees)) ((PIEA = Post Injury Earnings of Applicant))
    1. L = (PIESSE – PIEA) / PIESSE
  2. Individualized Proportional Earnings Loss
    1. = (WPI / L) / 100
  3. DFEC Adjustment Factor
    1. = ([1.81/a] * .1) + 1
    2. = ( (1.81 * .1)/a) + 1
    3. = (.181/a) + 1
    4. = 1 + (.181/a)
  4. Ogilvie DFEC Adjusted Rating
    1. = WPI * DFEC Adjustment Factor
    2. = WPI * (1 + (.181/a) )
    3. = WPI * (1 + (.181 / Individualized Proportional Earnings Loss) )
    4. = WPI * (1 + (.181 / ( (WPI / L) / 100) ) )
    5. = WPI * (1 + (18.1 / ( (WPI / L)  ) )
    6. = WPI * (1 + (18.1 * (L/WPI) ) )
    7. = WPI + (18.1 * L)
  5. Conclusion
    1. If the injured workers’ individualized proportional earnings loss is outside all of the FEC ranks, you may calculate the Ogilvie adjustment by adding (18.1*Earnings Loss) to the WPI.

The only flaw with the proofs offered by William and myself is that they are too exact.  The WCAB in Ogilvie never sets forth the exact process for performing the Ogilvie adjustment calculation – so the only official method involves rounding to different significant figures at different places.  Thus, a calculation performed in strict accordance with the WCAB in Ogilvie and through one of these mathematical proofs would differ very slightly.

What do you think? Leave a comment or drop me a line.

By Posted on Posted in 2005 PDRS, Almaraz / Guzman, AMA Guides, Case Law, Ogilvie, Permanent Partial Disability, Workers Compensation Resources No Comments Tagged with , , , , , , , , , , , , , , , , ,
Ogilvie and Almaraz/Guzman - lets cut to the chase
Ogilvie and Almaraz/Guzman - let's cut to the chase

First off, if you haven’t already downloaded Ogilvie II and Almaraz/Guzman II, do so now!

As I mentioned previously, each of these cases is about 50 pages long, so there is clearly no substitute for reading them for yourself.  However, here’s Ogilvie II and Almaraz/Guzman II in five sentences: ((Photo courtesy of Scallop Holden))

  • Ogilvie v. WCAB II:
    • The WCAB ruled the original Ogilvie (I) formula is still valid.
    • The WCAB appears to have created a right to reopen a case for “individualized proportional earnings loss.”
    • Vocational testimony is not an appropriate way to dispute the DFEC portion of the 2005 Permanent Disability Rating Schedule.
    • (Bonus Dissent Summary: The lone dissent by Caplane says that vocational testimony should be considered proper rebuttal to an entire permanent disability rating.)
  • Almaraz/Guzman II:
    • The WCAB ruled that a doctor must issue reports within the “four corners” of the AMA Guides 5th Edition to comply with Labor Code Section 4660(c).  ((Here, the phrase “four corners of the AMA Guides” just means the parties are restricted to the actual text of the AMA Guides and cannot use analogies and evidence from outside the AMA Guides.))
    • However, either party may obtain rebuttal evidence in the form of supplemental reports and depositions regarding the use of any other chapter, method, or table within the AMA Guides.
    • (Bonus Dissent Summary:  The dissenting opinion from Brass, Caplane, and Moresi says they would affirm their decision in Almaraz/Guzman I.)

What do these cases mean for the practitioner?

  • The WCAB has created a new right to reopen for a higher than expected “individualized proportional earnings loss.”
  • The Ogilvie Mathematical Proof of 18 Point Add-Ons still stands.
  • I see even more doctor depositions in my future.
  • My phone is going to be ringing off the hook tomorrow.

By Posted on Posted in 2005 PDRS, AMA Guides, DFEC Rebuttal, Downloads, Free, Ogilvie, PDRater, Technobabble, Workers Compensation Resources 2 Comments Tagged with , , , , , , , , , , , , , ,
lincolnblues
Even this guy can do the Ogilvie adjustment calculation in his head

If you’re using my Ogilvie calculator for situations involving a 100% earnings loss, you’re working too hard.  ((Photo courtesy of lincolnblues))

If you have 100% earnings loss and WPI less than 45, the Ogilvie adjustment formula will always result in WPI + 18.

Not to worry.  I can make Ogilvie even easier:

  1. [download id=”1″].
  2. [download id=”2″]!

The Ogilvie mathematical proof has been available for several weeks for peer review.  I’ve only received positive feedback. ((An anonymous source from the DWC actually called it “cool”!))  The above Ogilvie Adjustment Chart has been testing by myself and other workers’ compensation attorneys, but like everything else on this site is provided subject to all legal disclaimers.

Here’s a peek at what they look like:

Ogilvie Mathematical Proof
Ogilvie Mathematical Proof

Ogilvie Adjustment Chart
Ogilvie Adjustment Chart

By Posted on Posted in 2005 PDRS, Case Law, DFEC Rebuttal, Ogilvie, Workers Compensation Resources No Comments Tagged with , , , , , , , , , , , , , , , , , , ,
Ogilvie for Dummies
Ogilvie for Dummies

UPDATE: DOWNLOAD THE MATHEMATICAL PROOF AS A PDF!

Get ready to stop paying people to do Ogilvie calculations, recycle your Gearheart/Gerlach handouts, and delete your Frost Excel spreadsheet. ((Sorry Jeff, Mark, Mark, and Ray!))  We’re about to go all “Beautiful Mind.”

Yesterday while at the Oakland WCAB an Applicant’s attorney mentioned he noticed an interesting trend in the Ogilvie formula.  ((Thank you “S”!  Unfortunately, he did not want to be named.)) ((Man, I *wish* I could take credit for this observation.)) He said that whenever he does an Ogilvie calculation for someone with a 100% earnings loss and a modest WPI, the WPI is always increased by 18.  ((Not multiplied by 18, but an addition of 18.))

I ran a number of test calculations on this theory and it appeared to be right.  My calculations show that up to a WPI of 44 the increase appears to always be 18.1, but the last “0.1” always gets rounded down.  However, appearing to be right just isn’t good enough for me.  And, because I am just truly that nerd, here’s the fully mathematical proof:

Let’s break down the calculations at the heart of Ogilvie:

  1. Earnings Loss ((PIESSE = Post Injury Earnings of Similarly Situated Employees)) ((PIEA = Post Injury Earnings of Applicant))
    1. = (PIESSE – PIEA) / PIESSE
    2. = ($1.00 – $0.00) / $1.00
    3. = $1.00 / $1.00
    4. = 1
    5. = 100%
  2. Individualized Proportional Earnings Loss
    1. = (WPI / Earnings Loss) / 100
    2. = (WPI / 100% )/100
    3. = (WPI / 1) / 100
    4. = WPI / 100
    5. Thus, for any WPI less than 45 and a total loss of earnings, the Individualized Earnings Loss will always be less than 0.450 in Table A.
  3. DFEC Adjustment Factor
    1. = ([1.81/a] * .1) + 1
    2. = ( (1.81 * .1)/a) + 1
    3. = (.181/a) + 1
    4. = 1 + (.181/a)
  4. Ogilvie DFEC Adjusted Rating
    1. = WPI * DFEC Adjustment Factor
    2. = WPI * (1 + (.181/a) )
    3. = WPI * (1 + (.181 / Individualized Proportional Earnings Loss) )
    4. = WPI * (1 + (.181 / (WPI / 100) ) )
    5. = WPI * (1 + (.181 * 100 / WPI ) )
    6. = WPI * (1 + (18.1/ WPI ) )
    7. = WPI * ( (WPI/WPI) + (18.1/ WPI ) )
    8. = WPI * (WPI + 18.1/ WPI )
    9. = WPI * (WPI + 18.1/ WPI )
    10. = WPI + 18.1
  5. Conclusion
    1. If you have an Applicant with a 100% post injury earnings loss and a WPI of 44 or less, you should rebut the FEC and arrive at an adjusted WPI that is equal to the original WPI plus 18.1.

Therefore, I propose a new Ogilvie formula that will be easy for anyone to remember:

  • Step 1: If the injured worker has a 100% earnings loss and a WPI of 44 or less, add 18.1 to the WPI and round down.
  • Step 2: If the injured worker has less than 100% earnings loss or a WPI of 45 or higher, go to Step 3.
  • Step 3: For heaven’s sake, just make your life easier and use the calculators here at PDRater.com.

What do you think?  Leave a comment or drop me a line.