Murphy and DeNisi (2021) call on researchers to “examine the cumulative effects of biases in the evaluations of and decisions regarding older workers,” acknowledging that “even if age differences at any one point in time (e.g., this year’s salary raise) are small, consistent differences in the treatment of older vs. younger workers could lead to large cumulative effects” (Murphy and DeNisi, 2021, p. 4). In this commentary, we aim to (a) probe what should constitute a small effect in the context of age stereotypes at work and (b) argue that there is evidence that cumulative effects of even small age-related biases impact the lives of older workers.