R.I. Gen. Laws § 36-4-28
All original appointments and promotional appointments to the classified service shall be for a probationary period of six (6) months, during which time the appointment authority shall report to the personnel administrator every sixty (60) days concerning the work of the employee and at the expiration of the probationary period unless the appointing authority files with the personnel administrator a statement in writing that the services of the employee during the probationary period have not been satisfactory and that it is not desired that he or she be continued in the service, he or she shall receive permanent status in this classification. Any employee may be dismissed by the appointing authority during the probationary period for reasons relating to the employee's qualifications or for the good of the service stated by the appointing authority in writing and filed with the personnel administrator. The probationary period is further defined to be one hundred and thirty (130) days worked in the classified position to which the person has been appointed.
R.I. Gen. Laws § 36-4-28