I don't know about Michigan law, but in some states if you have the property owners, or their representatives, approval, you can CC on that property regardless of other state laws. Of course in practice you don't want to except with close friends places because you don't want to have to rely on some random dude backing you up with the police and courts.
The only thing remotely similar to this is that if you do NOT have a CPL, you can gain permission to OC in the excluded zones of 750.234d with permission (we suggest written) of the owner. For example, if you do not have a CPL and you want to OC to your church, you MUST get written permission from your Pastor / Rabbi / Imam / Grand Poobah in order to carry. [Contrast with if you have your CPL, you can OC without permission, assuming you don't get trespassed.] There are, however, no such "permission" exceptions for concealed carry in Michigan.
750.234d Possession of firearm on certain premises prohibited; applicability; violation as misdemeanor; penalty.
Sec. 234d.
(1) Except as provided in subsection (2), a person shall not possess a firearm on the premises of any of the following:
(a) A depository financial institution or a subsidiary or affiliate of a depository financial institution.
(b) A church or other house of religious worship.
(c) A court.
(d) A theatre.
(e) A sports arena.
(f) A day care center.
(g) A hospital.
(h) An establishment licensed under the Michigan liquor control act, Act No. 8 of the Public Acts of the Extra Session of 1933, being sections 436.1 to 436.58 of the Michigan Compiled Laws.
(2) This section does not apply to any of the following:
(a) A person who owns, or is employed by or contracted by, an entity described in subsection (1) if the possession of that firearm is to provide security services for that entity.
(b) A peace officer.
(c) A person licensed by this state or another state to carry a concealed weapon.
(d) A person who possesses a firearm on the premises of an entity described in subsection (1) if that possession is with the permission of the owner or an agent of the owner of that entity.
(3) A person who violates this section is guilty of a misdemeanor punishable by imprisonment for not more than 90 days or a fine of not more than $100.00, or both.