Are there individual differences in the tendency to enjoy tasks regardless of the tasks' contents or situational determinants? To answer this question, we constructed and validated the six-item Trait Task Enjoyment Scale (TTES). In Study 1, it had an internally consistent one-factor structure (pooled N = 997); good test-retest reliabilities over 1 and 4 months; measurement invariance regarding gender (strong) and time (partial strong); and was not redundant with respect to a large number of theoretically related constructs. In Studies 2 and 3, the TTES predicted self-reported momentary task enjoyment, one of its opposites, boredom, and voluntary persistence in a free-choice paradigm. It did so for various tasks, including thirty diverse tasks presented in vignettes and a memory task in the lab. Results suggest that the TTES may predict momentary task enjoyment regardless of objective task aversiveness or, in this case, equally well for tasks with boring or enjoyable contents. The TTES addresses an important gap in current research on task enjoyment and is an adequately valid and reliable research tool.