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Journal of Finance Vol. 80 No. 2 2025

Uncovering the Hidden Effort Problem

Azi Ben-Rephael; Bruce Carlin; Zhi Da; Ryan D. Israelsen1

1 College of Business Administration

open access

Abstract

We analyze minute‐by‐minute Bloomberg online status and study how the effort provision of executives in public corporations affects firm value. While executives spend most of their time doing other activities, patterns of Bloomberg usage allow us to characterize their work habits as measures of effort provision. We document a positive effect of effort on unexpected earnings and cumulative abnormal returns following earnings announcements, and a reduction in credit default swap spreads. This is robust to using exogenous weather patterns as an instrument. Long‐short, calendar‐time effort portfolios earn significant average daily returns. Finally, we revisit important agency issues from the literature.

DOI
10.1111/jofi.13429
Volume
80
Issue
2
Pages
1261-1311
Language
en
Sources
openalex bibtex:phds-export.bib crossref

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