Introduction to Law & Legal Systems — Quick Notes

Common Law and Precedent

Common law is a system that gives written judicial decisions the force of law; precedent binds future cases with similar questions of law.
Precedent provides consistency and resolves disputes without always going to court.
Example: Brown v. Board of Education of Topeka (1954) established that racial segregation in public schools is unconstitutional; rejected the
c separate-but-equal1 principle; Brown serves as precedent in thousands of cases nationwide. 1954
Common law system is adversarial: parties bring cases, present evidence and arguments; judge/jury decide final outcome; parties bear the burden to investigate facts and raise issues.
Juries (where used) are typically drawn from local citizens; the judge acts as a gatekeeper to evidence and legal arguments to ensure a fair trial.
Common law is characteristic of England, the United States, and former British colonies; while variations exist, all rely on precedent; not solely on codes.

Civil law systems (code systems) originate from Roman and Napoleonic law; laws are contained in comprehensive codes.
Codes cover criminal, non-criminal, and commercial law; judges decide cases without juries and are often active in investigating cases (inquisitorial).
Law is primarily in the code; judges arent bound to follow other courts decisions in similar cases; legislature is the main source to enact/modify laws.
Used across Europe, Central/South America, Asia, and Africa; examples include France, Germany, Holland, Spain, Portugal; colonial adoption spread practices.

Religious law systems arise from sacred texts and apply to many aspects of life; Sharia (Islamic law) with Fiqh is the most widespread.
Most nations use religious law to supplement secular law; Saudi Arabia (Islamic) and the Vatican (Christian) are near-pure theocracies.
Customary law systems are less common; historically linked to monarchies and tribal authorities; potential issue: rulers seen as above the law; many monarchies have hybrid or replaced them.

Hybrid systems combine two or more legal systems within a country.
Example: India mixes common law (precedent) with Napoleonic civil codes and separate personal codes for Muslims, Christians, and Hindus; results in a hybrid system.

There are social norms (informal) and laws (formal penalties) governing behavior.
Public law applies to everyone and comes from legitimate authority; examples: constitutions, criminal laws, administrative laws.
Private law binds specific parties (e.g., contracts, tort, property).
Civil vs. criminal: civil actions are between private parties; criminal actions involve government prosecution and potential loss of liberty or life; civil liability is typically damages or other private relief.
Procedural vs. Substantive: procedural governs the process (notice, hearings, etc.); substantive defines rights and duties (e.g., speeding laws).

Federal and state constitutions; statutes from Congress and state/local legislatures; common law from appellate courts; administrative rules and regulations; treaties and conventions; executive orders.

US Constitution is the supreme law; it structures government, defines powers and checks/balances, and protects civil liberties.
Federal powers are limited; if not granted to the federal government, powers are reserved to the states (federalism).
Bill of Rights comprises the first 10 amendments.
States have their own constitutions to structure state government and protect rights.

Laws created by legislatures (federal or state).
Process: bill proposed, passed by both houses, signed by president/governor to become statute.
Local ordinances are enacted by local governments (counties, cities, townships).

Binding principles from appellate courts; decisions become precedent for lower courts.
Precedent reduces uncertainty and costs for businesses by illustrating how similar provisions have been interpreted in past cases.

Agencies issue rules to fill gaps left by constitutions and statutes.
Examples: IRS (tax collection) and EPA (environmental regulation).
Agencies derive power to create rules from statutes; some agencies are independent.

Treaties are binding international agreements; conventions are agreements among groups of nations.
Negotiated by the executive branch; ratified by a two-thirds Senate vote (rac{2}{3}).
Upon ratification, treaties have federal legal status equal to statutes.

Presidents (and state governors) can issue orders to direct enforcement and implementation of laws.
Not laws that directly bind individuals, but important for directing government enforcement.

Understanding business law is essential to manage liability and risk.
Business success requires recognizing legal issues and when to consult an attorney.
Legal systems vary: common law (adversarial, precedent, juries) vs civil law (inquisitorial, no precedent, codified rules).
Many nations employ hybrid systems combining two or more traditions; the U.S. operates within a multi-jurisdictional framework with multiple primary sources of law.