R.I. Gen. Laws § 5-20-25: Registration of apprentices.

(a) Any person who has agreed to work a minimum of eight thousand (8,000) hours over a period of time of not less than five (5) years under the direct supervision and instruction of a master plumber or journeyperson plumber as an apprentice to learn the plumbing business, and that agreement is approved by the division of professional regulation, shall be registered by the director of the department of labor and training and have issued to them a certificate showing that person to be a registered apprentice pursuant to § 28-45-13.

(b) Any person who has agreed to work a minimum of two thousand (2,000) hours over a period of time of not less than one year under the direct supervision and instruction of a master irrigator or a journeyperson irrigator as an apprentice to learn the irrigation business, and that agreement is approved by the division of professional regulation, shall be registered by the director of the department of labor and training and have issued to them a certificate showing that person to be a registered apprentice pursuant to § 28-45-13.

(c) Any person who has agreed to work a minimum of two thousand (2,000) hours over a period of time of not less than one year, under the direct supervision and instruction of a master water filtration/treatment system installer or a journeyperson water filtration/treatment system installer, as an apprentice to learn the water filtration/treatment business, and that agreement is approved by the division of professional regulation, shall be registered by the director of the department of labor and training and have issued to them a certificate showing that person to be a registered apprentice pursuant to § 28-45-13.