[Is it possible to avoid working on weekends in an Assisted Reproductive Technology program?]

Is it possible to safely avoid weekend oocyte retrievals and embryo transfers? It is possible to safely avoid Sunday oocyte retrieval and embryo transfers during GnRH agonist or antagonist cycles, to avoid oocyte retrievals 2 days seem also possible by delaying or advancing hCG administration in both analogs cycles but it is more difficult to avoid embryo transfers during two days. In intra uterine insemination programs, it is possible to avoid ovulation monitoring and inseminations by the use of GnRH antagonists. In IVF programs, ovulation monitoring could be avoid on weekends but the risk of ovarian hyperstimulation would exists in case of polycystic ovary or polycystic like ovary.