R.I. Gen. Laws § 28-11-2

A day’s work for all conductors and operators now employed, or who may subsequently be employed, in the operation of all street railways of whatever motive power in this state shall not exceed ten (10) hours work, to be performed within twelve (12) consecutive hours. No officer or agent of any corporation operating streetcars of whatever motive power in this state shall on any day exact from any of its employees more than ten (10) hours work within the twenty-four (24) hours of the natural day, and within twelve (12) consecutive hours; provided, that on all legal holidays, and on occasions when an unexpected contingency arises, demanding more than the usual service by the street railway corporation to the public, or from the employees to the corporation, and in case of accident or unavoidable delay, extra labor may be performed for extra compensation.