In late-September 2017, Os Operários finally won another regional championship title in 13 years and thus became the club with the greatest number of regional titles (last time exceeding the totals once shared by Porto Real, Sporting Príncipe and Sundy). The club will make their next national appearance in 13 years.
In late-September 2017, Os Operários won another regional championship title after a thirteen-year gap, thereby becoming the club with the most regional titles (last time surpassing those shared by Porto Real, Sporting Príncipe, and Sundy). The club will next participate in national competitions in thirteen years.