Recent occupational health research has begun exploring unhelpful workplace social support (UWSS). UWSS refers to actions taken by a colleague that the recipient believes are intended to be helpful but are perceived as ineffective. For example, a colleague may provide help that is not wanted or do something incorrectly while providing aid. Despite the perceived good intentions of UWSS providers, empirical research suggests that UWSS is a potent workplace demand negatively associated with occupational well-being. The mechanisms that link UWSS and reduced occupational well-being, however, have yet to receive empirical examination. We integrate the job demands-resources model, conservation of resources theory, and basic needs theory to construct a multistage model linking UWSS to reduced work engagement via the frustration of basic psychological needs and the consequent experiencing of negative emotions. We test this model across two studies-a three-wave weekly study (N