Also known as:state's police power · police power of the state · states' police powers · police power
Written by attorneys — see sources below.
The inherent authority vested in each state to enact and enforce legislation protecting the public health, safety, morals, and general welfare, provided the means bear a reasonable relation to those ends.
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How its tested
Common Examples
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Zoning Districts Upheld
Sierra Santos owned land in a growing suburb. The city enacted an ordinance dividing districts and barring industrial uses on her parcel to reduce traffic and protect residential character. The classification advanced public health and welfare, so the ordinance stood as a valid exercise of state police power.
Baking Hours Struck Down
Steven Silva operated a bakery and faced a state law capping employee hours at ten per day. The restriction lacked a direct tie to worker health or safety and instead imposed a general labor rule. The court held the statute exceeded the state's police power.
The New York legislature passed a labor law in 1897 that regulated bakeries and confectionery establishments.
Section 110 of article 8 of that law stated that no employee shall be required or permitted to work more than sixty hours in any one week or more than ten hours in any one day.
This applied unless for the purpose of making a shorter work day on the last day of the week.
The plaintiff in error violated the one hundred and tenth section of article 8, chapter 415, of the Laws of 1897, known as the labor law of the State of New York, in that he wrongfully and unlawfully required and permitted an employe working for him to work more than sixty hours in one week. The charge arose from a voluntary contract rather than any use of physical force.
The judgments of the County Court of Oneida County, the Supreme Court, and the Court of Appeals of New York upheld the conviction under the statute, although several judges dissented. The record indicated that the state courts had viewed the law as a measure relating to public health.
The case came before the Supreme Court of the United States after argument on February 23 and 24, 1905. The Court rendered its decision on April 17, 1905.
Simone Sanders sought a permit to rebuild her beachfront home. The commission required a public easement across her lot as a condition. The demand lacked an essential nexus to any harm caused by the rebuild, rendering the condition an invalid use of police power.
Nollan v. California Coastal Commission483 U.S. 825, 834 (1987)
The Nollans own a beachfront lot in Ventura County, California.
A concrete seawall approximately eight feet high separates the beach portion of their property from the rest of the lot. The historic mean high tide line determines the lot's oceanside boundary. The Nollans originally leased their property with an option to buy, and the building on the lot was a small bungalow totaling 504 square feet.
The Nollans' option to purchase was conditioned on their promise to demolish the bungalow and replace it. On February 25, 1982, they submitted a permit application to the California Coastal Commission proposing to demolish the existing structure and replace it with a three-bedroom house.
The Commission informed them that the permit would be granted subject to the condition that they allow the public an easement to pass across a portion of their property bounded by the mean high tide line and their seawall. On June 3, 1982, the Nollans filed a petition for writ of administrative mandamus in the Ventura County Superior Court to invalidate the access condition. The court remanded the case to the Commission for a full evidentiary hearing.
After the hearing, the Commission reaffirmed the condition. The Superior Court ruled in favor of the Nollans on statutory grounds and directed that the permit condition be struck. While the Commission's appeal to the California Court of Appeal was pending, the Nollans tore down the bungalow, built the new house, and bought the property. The Court of Appeal reversed the Superior Court. The Nollans appealed to this Court, raising only the constitutional question.
Southland Foods owned a warehouse abutting a narrow city street. The city widened the road under its police power and took a strip of the lot. The taking triggered just compensation even though the project served public safety.
Chicago, Burlington & Quincy Railroad Co. v. City of Chicago166 U.S. 226, 239, 17 S.Ct. 581, 585, 41 L.Ed. 979 (1897)
The City of Chicago, acting under an 1872 Illinois statute that became part of its charter in 1875, passed an ordinance on October 9, 1880, to open and widen Rockwell Street from West 18th Street to West 19th Street by condemning parcels of land owned by individuals and parts of the right of way of the Chicago, Burlington and Quincy Railroad Company within the city limits.
On November 12, 1890, the city filed a petition in the Circuit Court of Cook County seeking condemnation of the property and asking that just compensation be ascertained by a jury, with the railroad company admitted as a defendant along with other interested parties. The jury awarded one dollar as just compensation to the railroad company for the parts of its right of way to be used for the street, while awarding compensation to individual owners for their parcels.
The railroad moved for a new trial, which was overruled, and final judgment was entered in execution of the award. The judgment was affirmed by the Supreme Court of Illinois in 149 Illinois 457. After affirmance the railroad company sued out a writ of error to the United States Supreme Court.
The railroad had raised claims under the Fourteenth Amendment in its motion for new trial and in its assignment of errors filed in the state supreme court. The Illinois statute provided no provision for an answer by defendants in condemnation proceedings, but the railroad asserted its federal claims in the written motion to set aside the verdict and grant a new trial.
Solomon Silver led a religious group that performed animal sacrifices in private ceremonies. The city banned such practices to protect public morals. The ordinance targeted religious conduct and therefore exceeded the state's police power.
Church of the Lukumi Babalu Aye, Inc. v. City of Hialeah508 U.S. 520, 113 S. Ct. 2217, 124 L. Ed. 2d 472 (1993)
In April 1987 the Church of the Lukumi Babalu Aye, Inc., a not-for-profit corporation organized under Florida law in 1973 whose president is Ernesto Pichardo, leased land in Hialeah, Florida, and announced plans to build a house of worship, school, cultural center, and museum at which members would practice Santeria.
Santeria originated in nineteenth-century Cuba as a fusion of Yoruba traditions and Roman Catholicism. It centers on animal sacrifice performed by cutting the carotid arteries, after which the animals are usually cooked and eaten except in healing and death rituals. The announcement prompted the Hialeah City Council to convene an emergency public session on June 9, 1987.
At that session residents and council members voiced strong opposition to Santeria practices. The council then adopted Resolution 87-66 declaring opposition to religious acts inconsistent with public morals, peace, or safety and passed Ordinance 87-40 incorporating Florida's animal-cruelty statute that criminalizes unnecessary or cruel killing of animals.
After the Florida attorney general issued an opinion that ritual animal sacrifice other than for food consumption violated state law, the council in August 1987 adopted Resolution 87-90 opposing ritual animal sacrifice. In September 1987 the council enacted three further ordinances. Ordinance 87-52 barred possession of animals with intent to use them for ritual sacrifice except by licensed food establishments. Ordinance 87-71 directly prohibited any person from sacrificing an animal within city limits. Ordinance 87-72 restricted slaughter of animals to properly zoned slaughterhouse premises while exempting small-scale commercial hog and cattle operations.
The Church and Pichardo filed suit against the city and its officials in the United States District Court for the Southern District of Florida under 42 U.S.C. § 1983. They alleged that the ordinances violated their rights under the Free Exercise Clause. After granting summary judgment to the individual defendants on immunity grounds, the district court conducted a nine-day bench trial on the remaining claims and entered judgment for the city. The Court of Appeals for the Eleventh Circuit affirmed in a one-paragraph per curiam opinion. The Supreme Court granted certiorari.
Sabrina Shah lived with her grandson and his children in a single-family zone. The city ordinance limited households to nuclear families only. The restriction bore no rational relation to density or traffic control and fell outside the police power.
Moore v. City of East Cleveland, Ohio431 U.S. 494, 503 (1977)
In early 1973, Mrs. Inez Moore received a notice of violation from the city of East Cleveland. The notice stated that her grandson John Moore, Jr., was an illegal occupant of her home. It directed her to comply with the housing ordinance.
Mrs. Moore lived in her East Cleveland home together with her son Dale Moore, Sr., and her two grandsons Dale Moore, Jr., and John Moore, Jr. John came to live with her after his mother's death when he was less than one year old. When she failed to remove John from the home, the city filed a criminal charge against her.
Mrs. Moore moved to dismiss the charge. She claimed that the ordinance was constitutionally invalid on its face. Her motion was overruled. Upon conviction she was sentenced to five days in jail and a $25 fine.
The East Cleveland ordinance limited occupancy of a dwelling unit to members of a single family. The ordinance defined family to include only a husband or wife of the nominal head of the household, unmarried children of the head or spouse provided they have no children residing with them, a parent of the head or spouse, or not more than one dependent child of the head or spouse along with that child's spouse and dependent children.
The Ohio Court of Appeals affirmed the conviction after giving full consideration to her constitutional claims. The Ohio Supreme Court denied review of the case. The United States Supreme Court noted probable jurisdiction of her appeal.
The power reaches only measures that reasonably advance public health, safety, morals, or general welfare. Arbitrary or unrelated restrictions exceed that authority.
Does state police power allow any land-use regulation?
Comprehensive zoning that separates uses and bears a reasonable relation to health or welfare qualifies as a valid exercise. Uneven or arbitrary application to particular parcels may still fail.
Can states use police power to override individual liberty interests?
Yes when the regulation directly protects public health, such as compulsory vaccination laws. The means must remain reasonably calculated to the stated goal.
How does police power interact with takings claims?
A valid police-power regulation may still effect a taking if it denies all economically viable use or imposes an unrelated exaction. Courts apply separate tests for those issues.
438 U.S. 104, 98 S.Ct. 2646, 57 L.Ed.2d 631 (1978)
…that the property be put to its most profitable use. The terminal is a historic landmark and the law is a valid exercise of the police power to protect the public interest in such landmarks. Pp. 135-138. Majority opinion Opinion of Justice Brennan The question presented is whether a city may, as part of a comprehensive…