Mich. Comp. Laws § 418.315a : WORKER'S DISABILITY COMPENSATION —WORKER'S DISABILITY COMPENSATION ACT OF 1969 — COMPENSATION — Medical marihuana treatment; reimbursement by employer not required TEXT PDF Notwithstanding the requirements in section 315, an employer is not required to reimburse or cause to be reimbursed charges for medical marihuana treatment. MCL 418.315a Added by 2012, Act 481,s 1, eff. 12/28/2012.