California Code, Business and Professions Code - BPC § 7667

(a) The bureau shall have the power to grant leaves of absence and extensions of leaves of absence and approve absences during the term of apprenticeship.

(b) A leave of absence, including any extensions, shall not be approved for a longer period than an aggregate of one year.

(c) No credit will be given to an apprentice on his or her apprenticeship for the period during which he or she is absent from duty on leave.

(d) Application for a leave of absence and for an extension thereof shall be made by the apprentice on a form provided by the bureau.

(e) Upon termination of a leave of absence, the apprentice shall report that fact to the bureau within 10 days of his or her resumption of apprenticeship by returning to the bureau, his or her certificate of registration accompanied by a statement as to the resumption of apprenticeship which statement shall be certified as correct by the funeral director in whose establishment he or she is to resume his or her duties and by the embalmer under whose supervision he or she is to resume his or her apprenticeship.

(f) Failure to report within 10 days after the expiration date of any leave of absence shall be cause for cancellation of the registration of an apprentice.