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研究動機：由於財務報表使用人已由傳統上重視資產負債表轉為重視損益表，而損益 表上的單獨表達項目：非常損益、停業部門損益、會計原則變動累積影響數，雖讓公 司管理當局感到”拖油瓶”之累，卻是報表使用人的重要資訊來源。目前我國一般公 認會計原則之緘密，難免會有與經濟情況脫序之情形。因此，本研究動機如下： １．損益表上為何要設立單獨表達項目﹖是否具有決策有用性﹖ ２．我國企業採用單獨表達項目之情形及原因如何﹖ ３．我國制定會計原則的權威機構是否完全考慮到實質經濟情況而制定損益表上單獨 表達之準則﹖ 研究方法：包括兩個層面： 一、規範性研究部份：著重於觀念性的介紹，採敘述性及探索性的方法，就有關之期 刊、書籍及論文等次級資料進行研究，將美國及我國會計權威機構對於單獨表達之規 定，加以介紹。 二、實證研究部份：上市公司採實地調查其損益表上單獨表達之處理。非上市公司採 問卷調查方式，以窺我國企業採用性形及原因。

本研究運用的投資組合理論(Portfolio Theory)與免疫理論(Immunization Theory)建構資產負債管理模型，希望在於免除利率風險下，能夠極大化勞保基金的投資報酬率。本研究探討勞保老年給付年金制實行後，勞保基金在資產負債管理之下最適資產配置。我們以勞保局編印之「勞工保險統計年報」中勞保基金民國81年到91年實際投資的資料及勞保局委託研究之精算報告對於老年給付年金制實行後未來勞保基金的給付預測值，在不同年金選擇率以及不同的費率與控管年限下，根據勞保基金資產與負債的存續期間，建議勞保基金最適的投資組合，並計算資產負債管理成本，研究結果發現： 1 年金選擇率為100％及80%時，勞保費率提高至8.3%僅能確保未來30年與40年勞保基金不會因為利率變動而導致基金破產甚至無力清償，但考慮年限為50年時，國內市場無法找到存續期間可以配合的投資工具，無法規避利率風險。年金選擇率為50%時，由於未來各年之勞保的給付獲得舒緩，使得資產配置所需的存續期間也降低，故當勞保費率提高 至8%即可確保勞保基金未來50年可以規避利率風險的危機，且在國內市場上可以找到投資工具配合。 2. 要使勞保基金免於利率風險的考慮年限越長，其投資組合的重心應該從現行的銀行存款移轉到債券及股票與受益憑證。 3. 進行資產負債管理是需要成本的，若以資產負債管理前後效率前緣下的投資報酬率的差異為資產負債管理成本，在年金選擇率100%時資產負債管理平均成本為0.3695%；選擇率80%時平均成本為0.434%；年金選擇率為50%時資產負債管理平均成本為0.384%，研究結果顯示資產負債管理平均成本都低於0.5%以下，故建議勞保基金應盡早進行資產負債管理以因應老年給付年金化後利率風險對於勞保基金財務上的衝擊。 / This paper investigates the Asset-Liability Management for Labor Insurance Fund. We utilize Immunization Theory and Portfolio Theory selection model to immunize the surplus of Labor Insurance Funds against interest-rate fluctuations and to maximize expected return of Labor Insurance Funds simultaneously. In addition, we use the data from Labor Insurance Funds from 1992 to 2002 to demonstrate the implementation of our model. We calculate the optimal asset allocation and the ALM cost under different lump-sum/annuity selection ratio、time horizon and contribution rates. The empirical results from this study show that： 1. Assuming 100% and 80% participants choice annuity, to prevent the insolvency of Labor Insurance Fund from interest-rate fluctuations in 30 and 40 years, the Labor Insurance premium must increase to 8.3%. Assuming 50% participants choice annuity, to prevent the insolvency of Labor Insurance Fund from interest-rate fluctuations in 50 years, the Labor Insurance premium must increase to 8%. 2. To prolong the period over which the Labor Insurance Funds can immunize its surplus against interest-rate fluctuations, a large proportion of the investment asset should be allocate from bank deposit to bond and stock. 3. ALM needs cost. Assuming 100% participants choice annuity, the average ALM cost is 0.3695%.Assuming 80% participants choice annuity, the average ALM cost is 0.434%.Assuming 50% participants choice annuity, the average ALM cost is 0.384%. We find the average ALM cost is very small under any lump-sum/annuity selection ratio. Therefore, we suggest Bureau of Labor Insurance should start to implement ALM as soon as possible to avoid the affect of interest-rate fluctuations.

立法院於1992年2月26日修定保險法第146條，將國外投資正式列入保險業資金運用之項目，引導保險業參與國外金融市場。保險業因國內利率環境與資本市場欠缺長天期金融工具下，衍生顯著利差損問題，而國外金融商品的多樣性、高創新能力與高收益率似乎提供保險業資金投資選擇。 本研究嘗試透過不同構面的探討，將國外投資所面臨的風險與金融主管機關的監理措施加以說明，並詳細分析資產負債管理策略－資產負債區隔，建議保險業者應從資產負債管理出發，考量不同性質負債，尋找適合金融資產做為支撐之標的，如此才能透過搭配性質相近且年期適合的國外金融工具進行負債面的管理，使得國外投資能充份地發揮其多樣性與享有較高之投資收益。 亦應利用支撐負債面之金融資產組合所計算出來市場利率做為負債面評價基礎，做到資產與負債皆採用市價評估，更能反應保險公司真實的價值，並可做為主管機關監理參考。保險業者除透過資產負債區隔了解本身國外資產配置的適當性外，應輔以嚴謹的風險管理機制與自律機制，如此才能保有永續經營的能力。 / The article 146 of Insurance Law had been amended by Legistrative Yuan on 26 February 1992. It allows insurance company invests funds into foreign financial assets and across boundary to attend foreign markets. Taiwan insurance industry face significant losses from the actual credit interest lower than the credit interest rate due to economic environments and lack of long-term investment vehicles. The foreign financial market with multiplicity, innovation and higher yield seems to provide Taiwanese insurance companys a channel to resolve its interest rate gap problem. This research employs boarder discussions on the foreign investment risk of the life insurance industry from various angles. This paper also analyzes the control issues from regulator’s rerspective and outlines the asset-liability management tool “segmentation”. We also provide suggestions to Taieanese life insurance industry to adopt the asset and liability segmentation as their major tool in performing oversea investment. In the same time, the realistic surplus of the insurance company can be monitored by measuring the difference between mark to market assets and contingency liability that is calculated by market yield from replicated portfolio. In recent years, the foreign investment play a major role in Taiwanese Life insurance company’s asset portfolio, hence they are required to carefully monitor appropriate financial assets to support their liabilities. It also includes enhancing the risk management framework and self-control mechanism in order to maintain their business ability.

本文延續Huang(2004, 2008)的研究，將單期與多期挹注資金的資產負債管理議題專化於DC確定提撥退休金制度上，其研究將問題化成二次函數，以一般化最小平方法(Generalized least square, GLS)求出具有唯一解特性的決策變數，利用的軟體求解速度相當快，能有效率地一次找出多項資產配置比例。 本研究引入三種投資模型及其薪資模型，分別是Wilkie(1995)模型、MacDonald and Cairns(2007)模型、Huang and Cairns(2006)及Li(2009)，以蒙地卡羅模型模擬出各投資標的年報酬率與薪資水準，並利用這些預期的模擬值在負債目標控制為隨機成長或固定比例成長下，找出最適投資比例、每期挹注的額度與提撥比例。 最適配置為了解決下方風險(downside risk)問題，在允許限定風險容忍度下去最大化投資績效，本研究將目標函數加入衡量報酬項，依據員工希望的報酬，討論此項權重如何最適。亦加入交易成本項以反映實務情況，此投資總交易成本為權重的函數，於足夠支付交易成本的前提下找出權重最小值。 / In this study, the simulation of the return for each investment and wage pattern is via introduction of three investment model and their wage model, namely, Wilkie (1995) model, MacDonald and Cairns (2007) model, Huang and Cairns (2006) model and Li (2009), by using Monte Carlo simulation. The optimal contribution rate of investments, the amount of injection of each period, and income replacement ratio are determined when simulation is targeted in the balance control for the random growth or growth under a fixed rate of liabilities. The asset-liability management of single-period and multi-period injection of funds is specialized in the Defined contribution plan (DC), which is the extension of Huang’s (2004, 2008) study. Huang’s research transforming his argument into a quadratic function to generalized least squares method (GLS) having a unique solution to derive the decision-making variables. This method can efficiently find a set of allocation by software at a fairly rapid speed. The optimal allocation is to maximize investment performance subject to a limited risk had to tolerance for deal with downside risk. This study ameliorates the objective function by adding a constant term, which does not affect the investment decision-making variable. This new generalized least squares method use a constant represented as a weight, which is based on the desire asset of the employee. This study also takes transaction costs into consideration to reflect the practical situation. The total transaction costs are the function of the weight introduced into the new objective function. The minimum of weight can be reached when the goal is set to be sufficient to cover the transaction costs

本研究以免疫理論（Immunization Theory）與投資組合理論（Portfolio Theory）來架構退休基金的資產負債管理模型，希望在免除利率風險的情況下，極大化退休基金的投資報酬率。本文以退撫基金86年到88年實際投資的實證資料及其對未來給付支出的預測模擬值，在不同考慮年限與提撥率下，建議其最適投資組合，並計算出資產負債管理的成本。最後，再以84年到88年市場平均資料的實證結果，支持並驗證我們以退撫基金內部資料所做的實證結果。研究發現： 1、資產負債管理的成本相當少，因此退撫基金應該儘早進行資產負債管理。若以資產負債管理前後效率前緣下投資報酬率的差異為資產負債管理的成本，以退撫基金內部資料的研究顯示，資產負債管理的平均成本為0.133﹪；以市場平均資料的研究顯示，資產負債管理的平均成本為0.234﹪。 2、在進行資產負債管理的分析後，退撫基金的薪資提撥率應提高至14.84﹪，才能確保未來的30年內，退撫基金不會因為利率變動而導致基金破產甚至無力清償。 3、要使退撫基金免於利率風險的年限愈長，其投資重心必須從短期票券和債券移到債券與股票或受益憑證上。 / This paper investigates the Asset-Liability Management for pension fund. We utilize Immunization Theory and Portfolio Theory selection model to immunize the surplus of pension funds against interest-rate fluctuations and to maximize expected return of pension fund simultaneously. In addition, we use the public trading data of the investment market in Taiwan from 1995 to1999 and the data from the Taiwan Public Employees Retirement System（TPERS）from1997 to 1999 to demonstrate the implementation of our model. We calculate the optimal asset allocation and the ALM cost under different time horizons and contribution rates. The empirical results from this study show that: 1、 The ALM cost is very small. Therefore, we suggest TPERS should start to implement ALM as soon as possible. Given the investment performance of TPERS, We find the ALM cost is 0.133﹪. Given the performance of the investment market, the ALM cost is 0.234﹪. 2、 The TPERS must increase its contribution rate to 14.84﹪ in order to make sure that the TPERS will not be insolvent as a result of interest-rate fluctuations in 30 years. 3、 To prolong the period over which the TPERS can immunize its surplus against interest-rate fluctuations, a large proportion of the investment asset should be allocate from commercial paper and bond to bond and stock.

過去二十年以來，美國金融機構的財務狀況不斷遭遇挑戰，許多同業或相關行業紛紛發生財務危機甚至破產，其間不乏一些知名大公司，探究原因發現利率是大元凶，因在一九七Ｏ年代末至一九八Ｏ年代利率產生劇烈變化，面對利率如此驟變，對其業務與利率有息息相關的金融保險機構而言，無疑是極大考驗，為此各種金融創新的商品亦陸續出籠，但亦產生新風WP在未尋求避險工具下暴露出金融機構對於利率風險的管理仍有所欠缺。且在金融自由化、國際化施政方針之下，利率自由化及金融商品創新之陸續推展，利率顯得較具變動性，主管機關為維持保險公司之清償能力，對此一風險勢必應加以注意，以免保險業因利率風險變動造成巨額虧損影響保戶權益甚或影響其清償能力。 而資產負債管理係維持現金流入與現金流出量相等Cash Flow Matching，避免利率風險、流動性風險及再投資風險；資產負債管理有別於傳統財務管理方法，其具有下列特色：□重視資產負債表資產與負債二方面的關連性；□在達成可接受的投資報酬之際，同時兼顧利率風險；□促使資產管理人員(投資部門)及保險商品管理人員(精算及行銷部門)的連繫協調，進而使投資策略及商品策略之運作能相互配合；□有益於新產品開發及管理；□最終可促使獲利能力提昇，進而穩定獲利模式並促使公司穩定成長。 資產負債管理方法，包括獲利力分析(Profitability Analysis)、利率分析(Rate / Volume Analysis)、期間分析(Duration Analysis)、Gap Analysis 等，其中較廣為使用者為：□平均存續期間(Duration) ；□利率期貨（Interest RateFutures)；□股價指數期貨（Stock Index Futures）；□息票內化法（Internal Coupon Stripping）；□利率交換（ Interest Rate Swaps ）；□資產負債的區隔(Segmentation of Assets/Liabilities)；□現金流量情境分析（Cash Flow Projection under Multiple Economic Scenarios）。以監理立場考量，選擇採用的資產負債管理方□k除須顧及壽險公司之利率風險外，尚須考慮其流動性及收益性，在我國正漸漸鬆綁金融政策及邁進國際化之際，不宜對壽險公司之監理政策採取過於嚴謹手段，而平均存續期間之方法除可包融其他資產負債管理方法並可加以綜合運用，故便針對平均存續期間方法詳加介紹。 經上述之分析討論後，若要此資產負債管理分析落實及在不對壽險公司予以過多限制下，在壽險監理上應如何規範呢？歸納結果如下：□對於模擬之利率設定，採用一綜合式規定，每期依市場狀況指定2至3種利率，其餘數種由各公司視情況選用；□避免壽險公司過多困擾及考量我國目前尚無採用市價會計之實力下，仍以法定會計原則作為衡量標準，惟對於預期交易量將日益增多之衍生性金融商品，應要求於財務報表中揭露交易活動之質與量，且當實際結果有損失部分應於報表內表達；□要求壽險公司作區隔化，便於作預測及現金流量管理，且因應我國未來人口結構老齡化之年金。 商品開始販售之年金保險，其性質不同於一般之壽險商品區隔化更有其必要。有關免疫化的分析報告於利率環境變動不大時，每季提出並須經由會計師、精算師複核簽證及每月提出資產變動情況報告；若利率產生遽烈變動(如3%)時應於一個月內再作調整及編製免疫化分析報告，以避免影響壽險公司之穩定性；□對於壽險公司平均存續期間差距情況作一評等，列入經營風險評估及稽核抽檢之考量；有關平均存續期間之分析報告採不對外公開形式。

金融機構之降息政策與全球經濟環境之不確定性，大幅增加人壽保險人之經營風險，以鄰國日本人壽保險為例，自1996年日產生命發生財務危機開始，已有5家保險公司宣佈倒閉或破產，6家進行合併，其餘14家也面臨嚴重之財務壓力，為避免系統風險造成台灣人壽保險產業之破產危機，如何創新保險商品及研擬風險管理成為重要之議題。 　　人壽保險公司之負債資產比極高，因此公司之財務健全與投保人之權益息息相關，利率變動將顯著影響公司獲利能力，因此利率風險管理實為當務之急。投資型商品之開發為人壽保險產業因應利率風險之新興策略，早期為人壽保險與共同基金結合，或與銀行定存結合，近來發展出與指數型金融商品連結之保本型人壽保險。因為商品之複雜度，評價將成為重要之課題，投資型保險基於被保險人參與財務風險程度之大小差異，風險管理與傳統型保險有所差別。 　　本研究首先探討目前人壽保險市場之現況，詳細定義投資型人壽保險，探討發展過程，並實際進行試算與評價分析，列舉說明精算之規範，資產負債管理、風險資本額制度下之定位及外匯等問題，以個案討論台灣及中國大陸市場之投資型商品，並提出現況之建議。 / Due to the monetary policy in the banking sector and the global economic uncertainty, the solvency issue for the life insurer becomes crucial. In Japan life insurance market, five insurers have declared their bankruptcy since 1996, six insurers had been merged, and the others have suffered serious financial press. Preventing the ruin crisis of life insurers and strengthen their financial abilities through innovation products and risk management techniques in Taiwan have become an important issue for the management. 　　Owing to the high leverage ratio in life insurer's capital structure, the reserve adequacy plays a vital role in shielding the policyholder's rights. Since the uncertainty of the interest rate affects the reserve and surplus of the insurer, asset-liability risk management becomes an important subject. Adding the investment-linked life insurance policies in the insurer's liability portfolio is an innovative strategy in managing the low interest risk. Combining with the mutual fund or the bank certificates in early stage has advanced to integrate with the equity indexed products. The investment-linked products vary from the traditional ones allowing the participation in the financial risks. Owing to the complexity of its design, the valuation becomes essential. 　　This study analyzes investment-linked life insurance policies and their historical evolutions. The financial valuation processes are illustrated explicitly. The regulations in the reserve valuation, the asset-liability management, the connection with risk-based capital (RBC) and the related hedging issues are also explored. Finally, the product designs and managerial issues in operating the investment-linked life insurance policies in Taiwan and Mainland China are discussed.

壽險業所販賣之商品通常為長年期保單，此一商品特性使得壽險公司的責任準備金(負債)非常容易受到市場利率波動而產生變動，進而影響到公司的清償能力。因此，資產負債管理對壽險公司來說一直是非常重要的一個課題。 過去的會計制度並未強制要求保險公司在財報中反應出準備金對利率的波動，資產負債管理的好處便無法在這樣的會計制度之下產生原有的作用，進而可能導致保險公司不重視這樣的管理方式。近年來保險監理的國際趨勢致力於加強準備金公平衡量以及真實揭露保險業的負債價值，因此我們可以預期在未來準備金的波動對保險公司的影響會較現在來得顯著，資產負債管理對壽險公司也應該會有較為顯著的影響。 本研究採用模擬的方式，比較不同投資策略的壽險公司在不同會計制度之下的財務狀況，進而探討資產負債管理的策略是否確實能讓保險人在公平價值準備金下較不受利率波動之影響。本研究的結果顯示在公平價值準備金的架構下，採用資產負債管理的壽險公司其損益會較沒採用資產負債管理的壽險公司穩定；若是在帳面價值準備金的架構下，採用資產負債管理的公司反而因為做出了多餘的避險行為致使其損益較不穩定。另外，本研究發現若是保險公司在資產負債策略下所採用的避險指標不符合目前法規，對公司的損益也會造成不必要的波動。因此本研究認為保險公司在實行資產負債管理策略時，應該參照目前會計制度下所給定的方式來做避險，進而達到最大的效益。 / Life insurers' liability value is relatively sensitive to interest rate due to the long term characteristic of the policies. The high leverage ratio strengthens the impact on how interest rate can influence solvency.. Life insurer therefore should manage their assets and liability in a prudent way. In the past, supervisory authorities used to regulate the insurer to recognize their liabilities in book value, which makes the benefits of ALM insignificant. Under such regulation, the main purpose of asset allocation for most of the life insurers was to generate higher investment return instead of matching asset with the liability, nor to maintain risk at acceptable level under book-value reserving. The international financial report standard No.4 (IFRS4) suggests that insurers should measure their liability under fair value in the future. The new regulation may increases the volatility of the life insurer's liability and emerges the benefit of ALM The objective of this article is to compare the effect of ALM strategy on life insurer's financial statement under both accounting standards via simulation methods. The result shows that the insurers with ALM face more stable financial statement if they manage their interest rate decently. One of the results shows that the insurers who manage their asset based on fair value duration faces more volatility than insurers without ALM under book value reserve. This implies that the insurer with ALM still suffers higher volatility if the regulations do not support such behavior. We therefore suggest that the insurers should manage their asset based on their liability interest rate risk under the condition that they choose the appropriate interest rate risk indicator to fit different regulations.

University of Macau / Faculty of Social Sciences and Humanities / Department of Government and Public Administration