 Jason Hanna (2019) advances a better version of the objection. Hanna argues that medical professionals do exercise control over gametes and are proximate causes of the children created through their use. After all, medical professionals often perform the critical steps necessary for conception. Indeed, in many cases medical professionals are more causally proximate and exercise more control over the creation of children than gamete donors. Consistency thus demands that at least some of the medical professionals involved in gamete donation be ascribed parenthood. According to Hanna, the most promising way for causal theorists to escape this reductio is to accept that causal responsibilities do not extend to cases in which: (a) one individual acts for the sake of another in an employee/employer type relationship and (b) that individual has reasonable assurances that the employer will ensure that any obligations arising from their actions will be fulfilled. This move has intuitive appeal. We do not think that an employee whose assigned task produces pollutants has a special responsibility to clean up those pollutants if her employer fails to do so as promised. Hanna notes that this limit on the scope of causal responsibility insulates gamete donors from weighty obligations because gamete donors provide services for commissioning parents in something like an employee/employer relationship. 