"This study examines workers' motives for joining or rejecting a voluntary 28-h work-time reduction scheme in Germany. Using a mixed-methods design that combines semi-structured interviews and a survey of eligible employees, we analyse how personal, financial, and professional considerations shape decisions about shorter hours. Two main motivational categories emerge: a desire for greater work-life balance, and concerns about income loss and career impact. Findings highlight how uncertainty affects perceived opportunities and risks differently: even without clear time-use plans shorter hours can be chosen to increase autonomy, but they are rejected confidently to avoid professional or financial risks. This underlines the value of qualitative research with open-ended questions and the potential strategic relevance of latent desires to reduce hours among workers who are currently reluctant to consider such options."

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