The Impact of Accounting Standards on Pension Investment Decisions

Abstract

This study analyzes the ‘real’ effects of accounting standards in the context of defined benefit pension plans. Specifically, we examine IAS 19R, which increases expected pension-induced equity volatility by eliminating the so-called ‘corridor method’, a smoothing device for actuarial gains and losses. Supported by interview evidence, we show that IAS 19R leads firms to reconsider their pension investment decisions. Using matched samples of treatment and control firms, results from multivariate difference-in-differences tests indicate that firms affected by the adoption of IAS 19R significantly shift their pension assets from equities into bonds, relative to control firms. This effect is attenuated for firms with larger and better funded pension plans. Supplementary analyses suggest that this shift in pension investment is mainly due to IAS 19R’s changes in the accounting for actuarial gains and losses (the ‘OCI method’). These results are robust to several sensitivity tests, although endogeneity concerns cannot be fully ruled out. Our study informs accounting standard setters of potential shifts in firms’ real economic activities due to concerns about pension-induced equity volatility.

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