1983, served as District Judge, appointed by then-Governor Carlos Romero Barceló.
From 1983 to 1984 he served as a Judge District Court Administrator, Mayagüez Judicial Region In 1993 Governor Pedro Rosselló hired him to be his Legal Advisor.
He was replaced by Appeals Court judge Edgardo Rivera García.
Two months later, Governor Luis Fortuño appointed him as a special monitor to oversee and make recommendations on the operations of the Puerto Rico Police Department, after over 60 of its agents were arrested following an FBI sting against police corruption.
Efraín Rivera Pérez died on September 15, 2013, in a motorcycle accident in Guaynabo, Puerto Rico.