California No Smoking Sign Requirements: Placement and Fines

California’s no smoking sign requirements come from Labor Code 6404.5 for workplaces and Government Code 7596–7598 for public buildings. Both laws call for a “clear and prominent” sign at every entrance, using specific statutory text. Missing or noncompliant signs draw fines starting at $100 and rising to $500 for a third violation within a year.¹

What the Sign Has to Say

The statute prescribes the wording, and there are only two options. If smoking is banned throughout the building, the sign reads “No smoking.” If smoking is allowed in certain areas, it reads “Smoking is prohibited except in designated areas.”²

That’s the full content requirement. The law does not set a minimum size, a required font, a color scheme, or mandate the international no-smoking symbol (the red circle with the line through the cigarette). Adding the symbol and printing the sign large enough to read from a few feet away is common practice and strengthens a compliance defense, but neither is written into the statute.³

State law also does not require bilingual signs. Many California employers post English and Spanish text anyway, which helps show a good-faith effort to communicate the policy to everyone on the premises.

Vaping Belongs on the Sign

California’s definition of “smoking” now includes e-cigarettes and vaping devices. Labor Code 6404.5 pulls its definition from Business and Professions Code 22950.5, which covers any device that delivers nicotine or other substances through vaporization or aerosolization, and Government Code 7597 uses the same definition for public buildings.²⁴

So the statutory “No smoking” text already covers vaping as a legal matter. The practical problem is that most people don’t read it that way when they glance at a sign. Language such as “No smoking or vaping” or “No smoking, including electronic cigarettes” isn’t required by the code, but it closes the gap between technical compliance and actually preventing violations.

Where the Signs Go

In workplaces where smoking is banned throughout the building, a sign must be posted at each entrance to the structure.² Every entrance means every one: front doors, side doors, loading docks, garage entrances. Miss a single door and you weaken the argument that you took reasonable steps to prevent smoking on the premises.

Signs also have to be positioned where people will see them before they enter. One tucked behind a swinging door, or mounted at floor level, doesn’t meet the “clear and prominent” standard the statute uses.

For public buildings — those owned or leased and occupied by the state, a county, a city, a city and county, or a California community college district — signs must cover both the indoor prohibition and the 20-foot outdoor buffer zone around main exits, entrances, and operable windows. If an agency wants to ban smoking in other outdoor areas beyond that 20-foot zone, a sign describing the additional restriction has to be posted for the ban to be enforceable.⁴

Employer-owned or leased enclosed vehicles that function as a workplace, like a company van used for daily operations, also need a no-smoking sign whenever a nonsmoking employee is present.¹

Which Buildings Are Covered

The workplace rule reaches almost every enclosed place of employment in the state: offices, restaurants, retail stores, warehouses, and even owner-operated businesses with no employees at all. “Enclosed space” is read broadly, and it includes lobbies, elevators, stairwells, waiting areas, covered parking garages, and restrooms that are structurally part of the building.²

The common areas of apartment buildings and condominiums count as enclosed workplaces whenever employees work in them — maintenance staff, property managers, front-desk attendants. In those areas, the standard workplace sign requirements apply. Many local ordinances go further and require no-smoking signs in shared residential spaces regardless of whether employees are present.

One boundary worth naming: California Civil Code 1947.5 lets landlords prohibit smoking in individual rental units, but it treats that as a lease term rather than a signage mandate.⁵ Playgrounds, state beaches, and state park units have their own smoking restrictions with signage handled by other agencies, so the workplace and public-building rules above are not what governs those spaces.

Locations That Don’t Need Signs

Where the workplace smoking ban doesn’t apply, the sign requirement doesn’t either. Labor Code 6404.5 carves out a narrow list of exemptions:²

Tobacco shops and attached private smokers’ lounges, where the main purpose of the business must be selling tobacco.
Truck cabs and truck tractors, only when no nonsmoking employees are inside.
Theatrical productions in which smoking is an integral part of the story being performed.
Medical research or treatment sites where smoking is integral to the research.
Private residences, with the exception of homes licensed as family day care facilities.
Patient smoking areas in long-term care facilities.

These are read narrowly. If a business doesn’t fit squarely into one of them, the full sign requirements apply.

Fines for Missing or Noncompliant Signs

Enforcement falls primarily to local agencies, typically health departments or, in some cities, fire departments. A violation is treated as an infraction, and fines escalate for repeat offenses within a one-year window:¹

First violation: up to $100.
Second violation: up to $200.
Third and subsequent violations: up to $500.

Cal/OSHA only gets involved after an employer has been found guilty of three violations by local agencies within the previous year. From there, Cal/OSHA can investigate and issue its own citations, which run much higher — up to $7,000 for a general or serious violation and up to $70,000 for a willful serious violation, per the Department of Industrial Relations. Those figures are baseline maximums and are adjusted periodically.¹

Properly posted signs also work as a legal defense. The statute lists sign posting as the first of the “reasonable steps” an employer must take to avoid liability when a nonemployee smokes on the premises.² Signs alone aren’t enough — you still have to ask violators to stop — but compliant signage at every entrance is the foundation any defense builds on.

1
Department of Industrial Relations. California Workplace Smoking Restrictions
2
California Legislative Information. California Labor Code 6404.5
3
Department of Industrial Relations. California Code of Regulations Title 8 5148 – Prohibition of Smoking in the Workplace
4
California Legislative Information. California Government Code Chapter 32 – Smoking in Public Buildings
5
California Legislative Information. California Civil Code 1947.5