In recent panel studies, besides other methods such as sequential mixed-mode design, pushto-
web method, and prepaid monetary incentives, follow-up contacts such as personalised
electronic mails (e-mails) or short message service are often used to motivate nonrespondents
to complete the questionnaire, increase the response rate within a limited fieldwork
period, and minimise panel attrition. Since it is still unclear when and how often non-complying
panellists should be reminded to take part in a survey, this contribution analyses
the short- and long-term effects of digital reminders across the fieldwork period. For this
purpose, longitudinal data and statistical procedures of event history analysis are applied
to reveal the effects of reminders on the likelihood, timing, and social structure of Swiss
juveniles’ survey participation. On the one hand, there are short-term and long-term effects
of multiple early reminders on the response of panellists receiving reminders. On the other
hand, there are no cumulative effects across the fieldwork period or overlapping effects of
reminders across the mixed survey modes. Considering the social structure of nonrespondents
who receive reminders, it appears plausible that there may be a selective response in
terms of the panellists’ social origin, educational level, and language proficiency
