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Ladies' night

Ladies' night is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ladies' night rather than just read about it. In short: A ladies' night is a promotional event, often at a bar or nightclub, where female patrons pay less than male patrons for the cover charge or alcoholic beverages. In the United States, state courts in California, Maryland, Pennsylvania and Wisconsin have ruled that ladies' night discounts are unlawful gender-based price discrimination under state or local statutes.

Key takeaways

  • Ladies' night belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Ladies' night to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Ladies' night from memory before moving on to harder problems.

Reference excerpt

A ladies' night is a promotional event, often at a bar or nightclub, where female patrons pay less than male patrons for the cover charge or alcoholic beverages. In the United States, state courts in California, Maryland, Pennsylvania and Wisconsin have ruled that ladies' night discounts are unlawful gender-based price discrimination under state or local statutes. However, courts in Illinois, Minnesota, and Washington have rejected a variety of challenges to such discounts. The term Ladies Night, or Girls Night, is also used colloquially to mean any gathering of women in fellowship.

Health concerns Ladies' nights that promote discounts on alcoholic beverages may lead to increased binge drinking, which can be a safety and health hazard.

Legality in the United States

Federal law Claims against ladies' nights under the Equal Protection Clause of the Fourteenth Amendment to the United States Constitution have failed under the state action doctrine. Similar actions have failed under the Civil Rights Act of 1871 (42 U.S.C. § 1983). However, ladies' nights may have federal tax implications. Federal claims were also involved in the unsuccessful challenge in Washington (see below).

California The California Supreme Court has ruled that ladies' days at a car wash and ladies' nights at a nightclub violate California's Unruh Civil Rights Act in Koire v Metro Car Wash (1985) and Angelucci v. Century Supper Club (2007). The Unruh Act provides: "All persons within the jurisdiction of this state are free and equal, and no matter what their sex [...] are entitled to the full and equal accommodations, advantages, facilities, privileges, or services in all business establishments of every kind whatsoever [...]." The court considered the statutory defense that the promotions serve "substantial business and social purposes", but concluded that merely being profitable is not a sufficient defense. The court accused the Wisconsin Supreme Court of "sexual stereotyping" for upholding a similar practice. Koire held that: "Public policy in California strongly supports eradication of discrimination based on sex. The Unruh Act expressly prohibits sex discrimination by business enterprises." Koire concluded:

The legality of sex-based price discounts cannot depend on the subjective value judgments about which types of sex-based distinctions are important or harmful. The express language of the Unruh Act provides a clear and objective standard by which to determine the legality of the practices at issue. The Legislature has clearly stated that business establishments must provide "equal . . . advantages . . . [and] privileges" to all customers "no matter what their sex." (§ 51.) Strong public policy supports application of the Act in this case. The defendants have advanced no convincing argument that this court should carve out a judicial exception for their sex-based price discounts. The straightforward proscription of the Act should be respected. Subsequent to the decision, California passed the Gender Tax Repeal Act of 1995, which specifically prohibits differential pricing based solely on a customer's gender. In Angelucci, the California Supreme Court ruled that discrimination victims did not have to ask the offending business to be treated equally in order to have standing to file an Unruh Act or Gender Tax Repeal Act claim. Courts have not found violations on the Unruh Act with discounts for which any customer could theoretically qualify for. The California Supreme Court opined:

A multitude of promotional discounts come to mind which are clearly permissible under the Unruh Act. For example, a business establishment might offer reduced rates to all customers on one day each week. Or, a business might offer a discount to any customer who meets a condition which any patron could satisfy (e.g., presenting a coupon, or sporting a certain color shirt or a particular bumper sticker). In addition, nothing prevents a business from offering discounts for purchasing commodities in quantity, or for making advance reservations. The key is that the discounts must be “applicable alike to persons of every sex, color, race, [etc.]” ( § 51), instead of being contingent on some arbitrary, class-based generalization. The Koire precedent has not been extended to strike down Mother's Day promotions. Koire was one of the precedents cited in the lower court (but not the state Supreme Court) in In re Marriage Cases

Illinois Ladies' nights in Illinois have been upheld under the anti-discrimination provision of the Dram Shop Act. The court determined that the discount was intended to encourage women to attend the bar in greater numbers, rather than to discourage attendance by males.

Maryland Montgomery County's human relations law has been interpreted to not only prohibit ladies' nights, but also a "Skirt and Gown Night" where a customer is given a 50% discount for wearing a skirt or gown. The court noted that: "Against this superficially humorous backdrop, we must decide whether this seemingly innocuous business practice constitutes unlawful discrimination within the meaning of a county ordinance." The Montgomery County Code, Human Relations Law, § 27-9, prohibited:

[...] any distinction with respect to any person based on race, color, sex, marital status, religious creed, ancestry, national origin, handicap, or sexual orientation in connection with admission to, service or sales in, or price, quality or use of any facility or service of any place of public accommodation, resort or amusement in the county. The Maryland's appellate court's review was far from de novo and the court emphasized that:

Although we believe the judge's findings to be contradicted by American cultural realities, we need not focus on the circuit court's determination; our review is that of the agency's conclusion based upon facts presented at the hearing. The record is replete with evidence that Skirt and Gown Night was intended to-and did-have the same effect and serve the same function as Ladies' Night, i.e. it provided price discounts to women and, in fact, operated as a mere extension of Ladies' Night. The court also stressed the peculiarity and strictness of the municipal ordinance it was interpreting:

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Ladies' night

Start with the simplest possible case. Write down what Ladies' night claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ladies' night before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ladies' night ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ladies' night

In research
Ladies' night appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Ladies' night in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Ladies' night is common in secondary-school and first-year university syllabi. It links to neighbouring topics Drinking culture, Gender equality, Sales promotion, so understanding it makes those chapters shorter.
In everyday life
Look for Ladies' night outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Ladies' night in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Ladies' night means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Ladies' night out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ladies' night in simple terms?

A ladies' night is a promotional event, often at a bar or nightclub, where female patrons pay less than male patrons for the cover charge or alcoholic beverages. In the United States, state courts in California, Maryland, Pennsylvania and Wisconsin have ruled that ladies' night discounts are unlawf…

Why does Ladies' night matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ladies' night?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ladies' night.

Tags

  • Drinking culture
  • Gender equality
  • Sales promotion
  • Sexism

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