Compared the fit of hyperbolic and exponential functions in describing the "deadline rush," a time management phenomenon that involves time discounting. After describing the phenomenon, a hyperbolic mathematical function for describing work behavior before a deadline is proposed. The proposed hyperbolic function is compared to an exponential function predicted by an economic model of discounted utility in a reanalysis of study-behavior data from four Internet-based psychology courses involving a total of 94 participants. The hyperbolic function described behavioral data significantly better than the exponential function. Implications for behavioral decision-making research in general, and for time management decisions in particular, are discussed.