Two Nobels were awarded this year after last year's prize was postponed over sex abuse allegations.
The mandatory reporting provision marks the first time the Vatican has put into law requirements for Catholic officials to report allegations of sex crimes to police or face fines and possible jail time.
Australia's Cardinal George Pell, a former top adviser to Catholic Pope Francis, was remanded into custody on Wednesday after a sentence plea hearing on his conviction for sexually abusing two choirboys more than two decades ago.
An Australian court found the senior Vatican adviser guilty by a trial jury on one count of sexual abuse and four counts of indecent assault of two boys at Saint Patrick's Cathedral in Melbourne in the 1990s.
The ongoing sex abuse scandal has again escalated in a crisis that has touched many countries across the globe, with recent cases affecting Chile, Germany and the US.
Top-ranking Cardinal George Pell's alleged victims have begun testifying against the top Vatican official in a hearing to decide whether the case should go to trial.
Documents leaked by The Guardian show more than 2,000 reports of sexual assault have been made relating to the Australian refugee detention centre located on Nauru island.
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