The 2014 GIROC survey (GIROC UK Reserving Survey 2014) highlighted the wide differences in approaches to measuring and communicating uncertainty in reserves that are currently employed in the UK and identified that this was an area the profession would benefit from focusing on.
The MUQ working party was set up in the wake of this finding and has undertaken work in two stages.
Stage 1 - Bringing together work that has been done before
Stage 1 was carried out in 2015 and focused on reviewing the various qualitative methods already employed. This work has brought together information on current market practice (both in the UK and around the world) and previous research into one place - please see the reference materials section below.
- A01: A Tried and Tested Framework for Reserve Uncertainty - GIRO 2015 - Insight into a reserve uncertainty framework in practice, presented by James Widdows of Chaucer.
- C10: Measuring Uncertainty Beyond Bootstrap - MUQ Working Party Findings
- Reserving Seminar 2015 - A look at how a reserve uncertainty framework has been developed in Australia
- CIGI 2015 - A look at how a reserve uncertainty framework has been developed in Australia.
Stage 2 - Development of a reserve uncertainty framework
Stage 2 commenced in 2016 and used the Stage 1 research to propose ideas for how the measurement of reserve uncertainty could be moved forward in the UK. As a result, the MUQ working party has proposed a framework for assessing uncertainty beyond statistical techniques.
The purpose of this framework is to provide actuaries with a best practice approach for thinking about aspects of uncertainty that are not covered by quantitative factors such as percentiles. This will enable actuaries to take a wider view of uncertainty and identify qualitative issues that may be missed in a purely quantitative approach. It has been developed with a focus on reserving uncertainty, but the principles could be applied to many other areas of actuarial work.
Feedback from members of the profession is encouraged to help develop the framework further. Please send feedback to firstname.lastname@example.org
- GIRO 2018: Workshop A: Reserve Uncertainty Framework: Linking Reserve Risk to Reserving
- Reserving Seminar 2016
- GIRO 2016
For further information, including additional reading, resources on individual framework elements and ideas on how to deal with specific elements of uncertainty, please the ‘Reference Materials’ section below.
- Experience from other countries
- Additional resources for framework elements
- Additional useful resources
- A framework for assessing risk margins
- A framework for Estimating Uncertainty in Insurance Claims Costs
- Data uncertainty matrix - The Forest of Brocéliande has a Knowledge Quality Assessment module, which provides an uncertainty matrix. This can serve as a high-level qualitative register for data uncertainties in a model and was used to inform the MUQ framework.
- IAN on data for "CP73" – guidance from the Society of Actuaries in Ireland on questions a Signing Actuary could ask to help form a view on whether data used for providing a Statement of Actuarial Opinion is sufficiently accurate, complete and appropriate.
- S&P GI ERM Rating Criteria – pages 22-25 cover risk controls assessment from a general insurance perspective, where the extent (or level of detail) that this is in place may cause additional (or lower) degree of uncertainty on the reserves.
Language used in communicating uncertainties:
- The Intergovernmental Panel on Climate Change has various types of reports on climate change demonstrating good use of language: IPCC_summary-for-policymakers
- Expert judgement elicitation
- Dr Joseph Lo, Dr Ed Tredger and Bernadette Hlavka discuss the tricks and possible pitfalls when conducting a successful expert judgment elicitation meeting, Article from The Actuary, 2013
- Uncertain factors surrounding expert judgements: Expert Judgement WP, 2015
- Expert judgement process has long been in use in actuarial work, but it has lacked transparency. This paper aims to provide a practical framework regarding expert judgement processes, and how those processes may be validated.
- ‘Ersatz model tests’ – Presented at the 2016 reserving seminar, it looks at ways of testing stochastic models, with an aim to developing deeper understanding of when and why different models are more or less appropriate.
Effectiveness of methods working party
- Methods beyond ‘bootstrap’ - These slides that were presented by the working party at GIRO 2015 contain detailed references to further reading on alternative methods to bootstrap.
- Use of capital models
- 2014 GIROC UK Reserve Survey
- Quantification and reporting of uncertainty for general insurance reserving - Contains suggested standard vocabulary for communicating uncertainty in GI reserving
- A change agenda for reserving. Report of the General Insurance Reserving Issues Taskforce (GRIT) (2006) – recommendations on how actuaries can improve the way in which reserving is done in general insurance.
- 31 May 2018
- 9 November 2017
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