Overview (Public vs. Private Entities): In California, private corporations or LLCs generally have no special immunities or notice requirements when sued – you name the corporation and proceed. By contrast, a public entity (state, county, city, school district, etc.) is subject to the Government Claims Act. You must first present a timely written government claim to the agency, and suits may be barred if no claim is filed in time. Public agencies and officials also enjoy immunities (sovereign immunity, official-capacity immunity under Gov. Code §§810–820, discretionary-act immunities, etc.). In practice this means that if the entity is the defendant, you follow the Claim Act rules (timing, claim content). If you instead sue a public officer, different rules apply: in particular, no claim is required to sue the officer individually for an on-duty injury (Gov. Code §950).
Official vs. Individual Capacity: A public official can be sued in two capacities. An official-capacity suit (e.g. “Sheriff John Doe in his official capacity”) is effectively a suit against the government entity; it can seek injunctive or declaratory relief, but usually cannot recover damages (because of sovereign immunity). An individual-capacity suit (e.g. “John Doe, Sheriff of X County, in his individual capacity”) holds the person personally liable, typically for damages. Under Gov. Code §820(a), a public employee “is liable for injury caused by his act or omission to the same extent as a private person” – meaning you can sue the officer as you would any private tortfeasor. (However, discretionary or good-faith actions often carry immunities – e.g. Gov. Code §820.2, §820.4 – so the officer may escape liability on immunity grounds.)
When to Join an Official in an Individual-Capacity Suit: If the claim is essentially a personal injury or tort caused by the officer (e.g. police force, wrongful arrest, negligence by a public employee, etc.), you would name the officer personally. Under Gov. Code §950, you do not need to file a government claim before suing the public employee for such an injury. For example, a police officer who uses excessive force can be sued individually for battery or excessive force, irrespective of claims against the police department. In addition, Gov. Code §815.3 provides that if a suit alleges an intentional tort by an elected official, the public entity is not liable unless the official is also sued – which effectively requires adding the official as a party.
When to Join an Official in an Official-Capacity Suit (Equitable Relief): Official-capacity suits are typically used for injunctive or declaratory relief. If you want the court to order a government body or officer to do something or stop doing something, you generally must name the specific officer who can carry out that order (e.g. the city manager, police chief, etc.). This is analogous to federal practice under Ex parte Young, and California law provides explicit authority: Code of Civil Procedure §526a allows citizens to sue public officials to enjoin “any illegal expenditure of, waste of, or injury to” public funds or property, by naming “any officer thereof…acting on its behalf”. In short, if your lawsuit seeks injunctive relief to stop a government official’s action or to enforce a mandatory public duty, you should join the official in their official capacity. (Example: a taxpayer challenges a city’s illegal spending by suing the city treasurer or mayor as the responsible officer.)
Torts and Public Officers: For ordinary tort claims (negligence, personal injury, civil rights violations, etc.), it is common to sue both the government entity and the individual officer. However, note the procedural differences: suing the entity requires a timely claim and is subject to entity immunity, whereas suing the officer individually does not require a claim (Gov. Code §950). If the officer acted within the scope of duty, Gov. Code §815.2 makes the public entity liable for the officer’s negligence, but if the officer is immune (e.g. discretionary immunity), the entity also escapes liability. In practice, if an employee’s negligent act would make a private person liable, the entity is vicariously liable (Gov. Code §815.2(a)), and the officer can be sued individually. Conversely, if the plaintiff’s main goal is monetary damages, suing the officer personally (subject to immunities) often makes sense, since suing the entity without a claim will fail.
Contract Claims and Public Officers: Breach of contract claims against the government typically require naming the government entity (not the individual officer) as defendant, because contracts are entered on the government’s behalf. Official officers generally are not personally liable on government contracts unless they acted outside legal authority or in a fraudulent manner. Thus, in a routine contract case with a government agency, you would sue the agency (and possibly name the officer in official capacity for injunctive relief), but rarely need to sue an official personally.
Constitutional/RICO, Civil Rights, Taxpayer Suits: If you assert a constitutional or statutory rights violation (e.g. under 42 U.S.C. §1983, or RICO), standard practice is to name the government official who committed the violation. For damages you name the officer in individual capacity (often alongside the agency). For equitable relief (e.g. an injunction against a state law or policy), you name the officer in official capacity. Taxpayer or public-interest suits (like the §526a example above) always name officers.
Government Claims and Timing: Recall that any claim against a public entity (or an official in official capacity) requires first presenting a written claim and observing statutory deadlines. However, an action solely against a public employee (individually) for on-duty injury can be filed without a claim (Gov. Code §950). If you sue both the entity and the officer, you must have presented a valid claim to the entity (and wait for rejection) before proceeding. Under Gov. Code §945.6, the lawsuit must then be filed within 6 months of claim rejection (or 2 years after accrual).
Key Statutes: In summary, important provisions include Gov. Code §820(a) (officer liable like a private person), Gov. Code §820.2 (discretionary immunity), Gov. Code §815.2–815.6 (entity liability and mandatory duty), Gov. Code §§945.4–945.6 (claims presentation), and CCP §526a (injunctions against officers). Use these rules to decide whom to sue: as a rule of thumb, sue the officer personally for damages (no claim needed), and sue the officer in official capacity for injunctive relief or to bind the government entity.
Sources: See California Government Code §§815–820.6 and §§945–951 (liability and claims provisions), and CCP §526a (taxpayer/injunction action). These statutes and cases interpreting them govern when public officers must be joined as parties.