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.

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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

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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?

Zachary A. Ballweg

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Experience

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Read their latest work

Lawyers professional liability update: Profitability streak continues for specialty writers, but how much longer?

Cyber insurance market hardens

Highlights of 2014 U.S. crop insurance

Actuaries and reserve adequacy: Are P&C actuaries impacting the reserving cycle?

Peaks and troughs: Reserving through the market cycle

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Zachary A. Ballweg

Experience

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