(a) The board has power to suspend, revoke, or place on probation a certificate of apprenticeship where the apprentice is guilty of any of the following acts or omissions:

(1) Failure to devote not less than an average of 30 hours per week to the duties of his or her apprenticeship.

(2) Failure to make an annual report to the board as required by this chapter.

(3) Absence from duty except on vacation for an aggregate of more than 10 days in any six months or 20 days in any year, without leave of absence granted by the board.

(4) Gross immorality.

(5) Being on duty as an apprentice while under the influence of liquor or illegal drugs.

(6) Disobedience of proper orders or instructions of his or her superiors.

(7) Violation of this chapter or any rule of the board adopted pursuant to this chapter.

(8) Soliciting business for a funeral director or for any embalmer.

(9) Fraud or misrepresentation in obtaining a certificate as an apprentice.

(b) An apprentice who has failed to renew his or her certificate, or who has had his or her certificate of apprenticeship suspended or revoked, within one year after such expiration, suspension, or revocation, may make application for reactivation. Not more than two reactivations shall be allowed by the board. The board, when the circumstances warrant, may allow an apprentice credit under a reactivation for time actually served under a previous certificate; except, that if the previous certificate has been suspended or revoked upon any of the grounds set forth in subsection (a), not more than 75 percent of the time previously served shall be credited on the reactivation.