R.I. Gen. Laws § 28-35-55: Filing day or required act falling on weekend or holiday.

Whenever, under chapters 29 — 38 of this title, the day, or the last day, for the filing with the workers’ compensation court, of any original petition or other petition, motion, decree, claim of appeal, reasons of appeal, brief, or other document, or for the doing of any act required or permitted to be done by those chapters, falls on Saturday, Sunday, or a legal holiday, the act or filing may be done on the next succeeding business day.