In this study, a field experiment was conducted to examine the effects of requesting a
donation following a pay rise announcement. The experiment evaluated the effects of (1)
unexpectedly requesting a donation either immediately after the pay rise announcement or a
week after the announcement, and (2) informing the workers in advance about the
forthcoming request for a donation. First, the likelihood of donation increased when the
request was made soon after the pay rise announcement, compared with the situation in …