Zachary A. Ballweg
FCAS, MAAA
Principal and Consulting Actuary
Brookfield, WI, US
Zach Ballweg is a principal and consulting actuary with the Milwaukee office of Milliman. He joined the firm in 2007.
Experience
Zach’s area of expertise is ratemaking and loss reserve analysis for property and casualty insurance. He has experience in many lines of business, with a special emphasis in:
- Commercial auto
- Crop insurance (federal MPCI and private programs)
- General liability
- Professional liability (including hospitals, lawyers, and physicians)
- Representations and warranties
- Workers’ compensation
Zach specializes in the evaluation of unique property and casualty exposures, providing consulting services to clients ranging from small, self-insured municipalities, to large corporate entities and MGAs.
Publications and Presentations
Zach has spoken at several insurance industry conferences, including those sponsored by the Casualty Actuarial Society.
Zach’s publications include:
- Peaks and Troughs: Reserving Through the Market Cycle, CAS E-Forum, Fall 2013.
- Actuaries and Reserve Adequacy, Contingencies, March/April 2014.
- Excess & Surplus Lines Market Hardens Further, Insurance Thought Leadership, April 19, 2022.
- Cyber Insurance Market Hardens, Insurance Thought Leadership, July 20, 2022.
- Lawyers Professional Liability Update: Profitability Streak Continues for Specialty Writers, but How Much Longer? Milliman Insight, September 22, 2022.
Professional Designations
- Fellow, Casualty Actuarial Society
- Member, American Academy of Actuaries
Education
- BS, Atmospheric and Oceanic Sciences, University of Wisconsin, Madison
- MS, Actuarial Sciences, University of Wisconsin, Madison
Publications
Read their latest work
Article
Lawyers professional liability update: Profitability streak continues for specialty writers, but how much longer?
22 September 2022 - by Zachary A. Ballweg, S. Andrew Kline
The LPL market continued to show strong financial results in 2021, but the winds could be changing as the magnitude of reserve releases has continued to decline in recent years.
Article
Cyber insurance market hardens
20 July 2022 - by Zachary A. Ballweg, Brian Z. Brown, Paul Miskovich
While the cyber market improved significantly in 2021, increases to prior-year reserves may cause a drag on earnings, and the Russian invasion of Ukraine creates uncertainty.
Article
Highlights of 2014 U.S. crop insurance
23 October 2015 - by Carl X. Ashenbrenner, Zachary A. Ballweg
This report covers 2014 multiple peril crop insurance (MPCI) aggregate results, 2014 MPCI results by state, MCPI 2015 and beyond, and 2014 private/hail summary reports.
Article
Actuaries and reserve adequacy: Are P&C actuaries impacting the reserving cycle?
12 March 2014 - by Zachary A. Ballweg, Susan J. Forray
Common methods used by property and casualty actuaries to determine insurance reserves may actually contribute to the reserving cycle.
Article
Peaks and troughs: Reserving through the market cycle
04 December 2013 - by Zachary A. Ballweg, Susan J. Forray
Does the variability of reserve adequacy across the market cycle stem from actuarial reserving methods?