Individuals regularly have to decide upon motor actions to be performed. Motor decision-making involves the selection between and specification of potential action plans (Cisek, 2007) and necessitates the integration of perceptual, cognitive, and motor processes (Cisek & Kalaska, 2010; van Ede & Nobre, 2023). The influence of cognitive load during decision-making on subsequent motor action execution remains largely unexplored (Gordon et al., 2021). This study investigates the influence of working memory (WM) load on goal-directed pointing movements, hypothesizing that increased WM load affects decision performance and leads to delays in action selection, potentially altering movement execution. Participants (n = 44) observed five circular targets randomly illuminating on a computer screen. Following an auditory start signal, they had to point towards the target which was illuminated n-steps back (conditions: 1-, 2-, and 3-back) under a reaction time constraint. Decision performance and fingertip movement kinematics were assessed using an optical motion tracking system (Qualisys). Repeated-measures ANOVA with condition as repeated factor was conducted for each parameter. Statistical parametric mapping (SPM) was used to compare time series of the fingertip position as well as its velocity across conditions. Decision performance decreased in the 3-back condition (p < .001), while reaction times significantly increased across conditions (p < .001). SPM curves did not exceed the critical thresholds for any of the times series. Cognitive load during motor decision-making influences decision performance and action selection in goal-directed pointing movements. However, n-back task did not affect movement execution, suggesting action specification to be unaffected by WM-load.