The inherent authority of a sovereign state to enact and enforce laws protecting public health, safety, morals, and general welfare. This power permits regulation of land use, business activity, and personal conduct without payment of compensation, provided the measures bear a reasonable relation to those public purposes and respect constitutional limits such as due process.
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Cases
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How its tested
Common Examples
6
Zoning Limits Residential Development
Preston Pratt purchased a large tract intending to build a commercial complex. The city then enacted a zoning ordinance dividing the area into residential districts and barring commercial uses. The ordinance operates as a valid exercise of police power because the classification reasonably advances public health and general welfare by controlling density and traffic. Pratt's challenge fails because the restriction leaves him with economically viable residential use of the land.
Defamation Liability And State Interests
Penelope Price, a private attorney, sued a magazine for publishing false statements about her professional conduct. The magazine argued that First Amendment protections barred recovery absent proof of actual malice. The court applied state libel rules that reflect the police power to protect individual reputation, allowing recovery on a negligence standard because Price was not a public figure. This outcome shows how the police power supports private tort remedies without conflicting with constitutional speech guarantees.
Gertz v. Robert Welch, Inc.418 U.S. 323, 94 S. Ct. 2997, 41 L. Ed. 2d 789 (1974)
In 1968, Chicago police officer Richard Nuccio shot and killed a youth named Nelson. State authorities prosecuted Nuccio and obtained a conviction for second-degree murder. The Nelson family retained petitioner Elmer Gertz, a Chicago attorney, to represent them in civil litigation against Nuccio.
Respondent Robert Welch, Inc., publishes American Opinion, a monthly magazine expressing the views of the John Birch Society. In March 1969, the magazine published an article titled "FRAME-UP: Richard Nuccio And The War On Police." The article accused Gertz of participating in a Communist conspiracy to discredit local law enforcement, described him as a "Leninist" and "Communist-fronter," and claimed he had been an officer of the National Lawyers Guild, which it portrayed as a Communist organization involved in planning attacks on Chicago police during the 1968 Democratic Convention. The article contained numerous inaccuracies, including the false implication that Gertz had a criminal record.
Gertz had served as an officer of the National Lawyers Guild approximately fifteen years earlier but had no involvement in planning the 1968 demonstrations. He had never been a member of the Marxist League for Industrial Democracy or the Intercollegiate Socialist Society. The managing editor of American Opinion made no effort to verify the charges against Gertz before publication and appended an editorial introduction stating that the author had conducted extensive research.
Gertz filed a diversity action for libel in the United States District Court for the Northern District of Illinois. The district court ruled that the statements constituted libel per se under Illinois law. After a trial, the jury awarded Gertz $50,000 in compensatory damages. The district court later entered judgment for the defendant notwithstanding the verdict, applying the New York Times standard. The Court of Appeals for the Seventh Circuit affirmed.
The Supreme Court granted certiorari to review the application of constitutional standards to defamation of a private individual.
Landmark Designation Restricts Redevelopment
Pierre Poulin owned a historic train terminal and sought to build a large office tower above it. The city designated the terminal a landmark and barred the proposed construction. The restriction functions as an exercise of police power to preserve the public interest in historic structures. Poulin retains the terminal's current use, so the measure does not constitute a taking despite reducing potential profits.
Penn Central Transportation Co. et al. v. New York City438 U.S. 104, 98 S.Ct. 2646, 57 L.Ed.2d 631 (1978)
In 1965 New York City enacted the Landmarks Preservation Law, which created an eleven-member Landmarks Preservation Commission and authorized it to designate buildings at least thirty years old that possess special historical or aesthetic interest.
The law required owners of designated landmarks to obtain Commission approval before altering exterior architectural features and imposed an affirmative duty to keep those features in good repair. In August 1967 the Commission designated Grand Central Terminal a landmark and the city tax block it occupies a landmark site; the Board of Estimate confirmed the designation the following month.
Penn Central Transportation Co. and its affiliates owned the Terminal, an eight-story Beaux-Arts structure completed in 1913 that served as the main station for the New York Central and Harlem lines. On January 22, 1968, Penn Central entered a fifty-year renewable lease with UGP Properties, Inc., under which UGP agreed to construct a multistory office building cantilevered above the Terminal and to pay Penn Central at least three million dollars annually after construction.
Penn Central and UGP submitted two plans prepared by architect Marcel Breuer: Breuer I, a fifty-five-story tower resting on the Terminal roof, and Breuer II Revised, a fifty-three-story building that would have removed part of the 42d Street facade. After four days of hearings at which over 80 witnesses testified, the Commission denied this application as to both proposals.
Penn Central filed suit in New York Supreme Court, Trial Term, seeking a declaratory judgment, injunctive relief, and damages for a temporary taking. The trial court granted the injunctive and declaratory relief. The Appellate Division reversed, holding that Penn Central had failed to prove deprivation of all reasonable beneficial use. The New York Court of Appeals affirmed, concluding that the Terminal could still earn a reasonable return and that transferable development rights provided significant compensation. The Supreme Court noted probable jurisdiction.
Zoning Defines Family Occupancy
Paige Porter, a grandmother, moved in with her grandchildren after their mother died. City zoning limited dwelling occupancy to members of a single nuclear family, excluding her arrangement. The ordinance reflects an exercise of police power aimed at preserving neighborhood character and stability. The restriction is invalid because it draws an irrational distinction unrelated to any legitimate public purpose.
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.
Labor Regulation Exceeds Police Power
Priscilla Parks owned a bakery and scheduled bakers for shifts longer than ten hours per day. A state statute limited bakery employees to ten hours daily to protect worker health. The law was struck down because it exceeded the legitimate scope of police power by interfering with freedom of contract without a sufficient connection to public welfare.
Lochner v. New York198 U.S. 45 (1905)
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.
Phoenix Technologies owned a rail yard abutting a city street. The city widened the street and took a strip of the yard for the improvement. The action required payment of just compensation because the taking went beyond mere regulation under the police power and instead appropriated private property for public use.
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.
5 common questions
Students Frequently Ask...
Does the federal government possess a general police power?
No. The federal government lacks a general police power to regulate solely for the health, safety, or welfare of citizens. Each federal action must rest on an enumerated power in the Constitution, unlike states which hold inherent police power.
When does land-use regulation cross from police power into a taking?
A regulation remains within police power and requires no compensation when it leaves the owner with economically viable use and advances a legitimate public purpose. It becomes a taking when it denies all economically viable use or fails the multi-factor balancing test that weighs economic impact, investment-backed expectations, and the character of the action.
Can states use police power to require vaccination?
Yes. Compulsory vaccination laws are valid exercises of the police power when they protect public health and safety from contagious disease. Such measures may override individual objections provided they are reasonable and do not violate other constitutional protections.
How does police power relate to zoning ordinances?
Zoning ordinances that divide land into districts and restrict uses are valid exercises of police power when the classifications are reasonable and substantially related to public health, safety, morals, or general welfare. Courts uphold comprehensive zoning schemes that meet this standard.
Does the police power allow states to regulate purely intrastate activity?
Yes. States may regulate intrastate matters affecting health, safety, and welfare under their inherent police power. This authority remains subject to federal preemption or specific constitutional limits but is otherwise broad.
. 376 U. S., at 273-276. In a democratic society such as ours, the citizen has the privilege of criticizing his government and its officials. But neither New York…
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