During the past decades, organizations increasinglyemphasized work-related flexibility in their organizationalpractices (1). One type of flexibility that hasbecome more common is “temporal flexibility”, ie,flexibility regarding working times. Initially, flexibleworktime arrangements were mainly implemented forthe benefit of the organization (eg, mandatory overtimework and shift-work), but over the years, attentionhas shifted towards flexible worktime arrangements,such as worktime control (WTC) (2), that may benefitboth the organization and its employees. WTC can bedefined as “an employee’s possibilities of control overthe duration, position, and distribution of worktime” (3).WTC comes in many forms. Well-known subdimensionsinclude control over (i) starting and ending times of theworkday (ie, flextime), (ii) when to take a break, (iii)when to take vacation or a day off, (iv) the distributionof workdays over the work week, and (v) whether andwhen to work overtime.