City Charter

The City of Yale is governed by the Fourth Class City Act.

In 1895, adoption of the Fourth Class City Act created two types of cities:  those of 3,000 to 10,000 population, which came under the act, and all others which remained "special charter" cities.  As of January, 2003, all but one of the "special charter" cities have reincorporated as home rule cities.  As of January 1, 1980 all fourth class cities became home rules cities by virtue of 1976 PA 334 (see also OAG 5525, 7/13/1979), which continued as the Fourth Class City Act as the charter for each former fourth class city until it elects to revise its charter.  As of January, 2003 seven cities (one of which is the City of Yale) continue to be governed by the Fourth Class City Act.

Source: 

https://www.mml.org/pdf/charter_revision/chapter1.pdf

The Fourth Class City Act; Act 215 of 1895

http://www.legislature.mi.gov/(S(fnt3egrx30ryfhz0iiwfsu55))/documents/mcl/pdf/mcl-chapters-81-113.pdf