Injunctions and Restraining Orders in California: Emergency Court Protection When You Need It Most

What Is an Injunction Under California Law?

An injunction is a court order requiring a party to do or refrain from doing a specific act, used when monetary damages alone would be inadequate to prevent irreparable harm. Most legal disputes unfold over months or years. Complaints are filed, discovery is conducted, motions are briefed, and eventually a case goes to trial or settles. But some situations cannot wait for the ordinary course of litigation. When a former business partner is destroying company records, when a neighbor is making credible threats of violence, when an ex-employee is about to share trade secrets with a competitor — the harm may be immediate and irreversible if the court does not act quickly.

This is the domain of injunctive relief: court orders that require a party to do something or, more commonly, to stop doing something. California law provides three distinct forms of injunctive relief, each designed for a different stage of the legal proceeding and each subject to its own procedural requirements. Understanding the differences between temporary restraining orders, preliminary injunctions, and permanent injunctions is essential for anyone who may need emergency court protection — or who may need to defend against it.

How Do You Obtain a Temporary Restraining Order in California?

A temporary restraining order is the most urgent form of injunctive relief available under California law. Governed by Code of Civil Procedure Section 527, a TRO can be obtained on an ex parte basis — meaning without the opposing party being present or having an opportunity to respond. This is an extraordinary remedy, and courts grant it only when the applicant can demonstrate that immediate and irreparable injury will occur before the matter can be heard on regular notice.

The ex parte nature of TROs reflects the tension at the heart of emergency judicial relief. Due process ordinarily requires that both sides be heard before a court issues an order affecting their rights. But when waiting for a full hearing would render the ultimate relief meaningless — because the harm will have already occurred — the law permits a temporary order based on one party's showing alone. To obtain a TRO, the applicant must file a verified application supported by declarations under penalty of perjury, demonstrating both the likelihood of prevailing on the merits and the immediacy of the threatened harm.

A TRO is inherently temporary. It typically remains in effect only until the preliminary injunction hearing; when the TRO was issued without notice, Section 527(d) generally requires that hearing within 15 days, or 22 days for good cause — just long enough for the court to schedule a hearing where both parties can present evidence and argument on whether a preliminary injunction should issue. If the applicant fails to seek a preliminary injunction or the court declines to issue one, the TRO dissolves and the parties return to their pre-order positions.

Which Court Issues a TRO, and What Happens at the Hearing?

In California, a temporary restraining order in a civil case is issued by the superior court where the lawsuit is pending. Code of Civil Procedure Section 527 defines "court" as the court in which the action is pending, so the TRO request is made in the same case as the underlying claims. If the case is filed the same day, California Rules of Court, rule 3.1150(b) requires the complaint to be filed first. A federal district court can issue a TRO under Federal Rule of Civil Procedure 65 when the case belongs in federal court. Civil harassment and workplace violence restraining orders are also requested in superior court, under their own statutes discussed below.

A TRO is requested by ex parte application, governed by rules 3.1200 through 3.1207. The papers must include the application, a declaration based on personal knowledge showing irreparable harm or immediate danger, a declaration describing the notice given, a memorandum, and a proposed order (rules 3.1201 and 3.1202). The applicant generally must notify the other side by 10:00 a.m. the court day before the hearing, unless exceptional circumstances justify shorter notice (rule 3.1203). The order to show cause and the TRO must be stated separately (rule 3.1150(c)), and the applicant or counsel must appear, in person or remotely where the court allows (rules 3.1150(d) and 3.1207).

The ex parte hearing itself is usually brief. The judge has typically read the papers, hears short argument from whoever appears, and then grants the TRO, denies it, or narrows the proposed restraints. A granted TRO comes with an order to show cause setting the preliminary injunction hearing. When the TRO issued without notice, Section 527(d) requires that hearing within 15 days, or 22 days if the court finds good cause. The applicant must serve the complaint, order to show cause, and supporting papers within five days or two days before the hearing, whichever is earlier, and the opposing party is entitled to one continuance of at least 15 days, with the TRO staying in effect until the continued hearing.

What Must You Prove to Get a Preliminary Injunction in California?

A preliminary injunction is a more substantive form of relief that follows a noticed hearing where both parties have the opportunity to present their case. The standard for obtaining a preliminary injunction is more demanding than for a TRO, because the order will remain in effect for the duration of the litigation — potentially months or years.

California courts apply a two-part balancing test derived from the California Supreme Court's decision in IT Corp. v. County of Imperial (1983). The court evaluates two interrelated factors: first, the likelihood that the applicant will prevail on the merits of the underlying claim; and second, the relative balance of hardships — that is, the interim harm the applicant would suffer without the injunction compared to the harm the respondent would suffer with it. These factors operate on a sliding scale. If the applicant makes a very strong showing on the merits, less evidence of irreparable harm may be required, and vice versa.

In practice, the balancing of hardships often proves decisive. A court may be reluctant to issue an injunction that effectively puts a company out of business, even if the applicant's legal claims appear strong. Conversely, when the threatened harm is severe and the burden on the respondent is modest — such as simply maintaining the status quo — courts are more willing to grant relief even when the merits are less clear.

Bond Requirements

One aspect of injunctive relief that parties often overlook until it becomes an obstacle is the bond requirement. Under Code of Civil Procedure Section 529, a court issuing an injunction may require the applicant to post a bond or undertaking to protect the respondent from damages if the injunction is later found to have been wrongly issued. The purpose of the bond is to ensure that a party who is restrained by court order — and who ultimately prevails on the merits — has a source of recovery for the losses incurred during the period the injunction was in effect.

The amount of the bond is within the court's discretion and can range from nominal to substantial, depending on the potential harm to the respondent. In commercial disputes, where an injunction might prevent a competitor from entering a market or a contractor from completing a project, bond amounts can reach hundreds of thousands of dollars. For individuals seeking injunctive relief, the bond requirement can be a significant barrier, particularly in cases where the applicant's financial resources are limited.

Civil Harassment Restraining Orders

Code of Civil Procedure Section 527.6 provides a separate, streamlined procedure for obtaining restraining orders in cases of civil harassment. This statute is designed for situations involving unlawful violence, credible threats of violence, or a knowing and willful course of conduct directed at a specific person that serves no legitimate purpose and would cause a reasonable person to suffer substantial emotional distress. It covers disputes between neighbors, coworkers, acquaintances, and strangers — essentially any relationship that does not fall under the Domestic Violence Prevention Act or other specialized protective order statutes.

The process begins with the petitioner filing a request for a restraining order, typically accompanied by a declaration describing the harassment. The court may issue a temporary restraining order immediately, without hearing from the respondent, if the petition demonstrates reasonable proof of harassment. A full hearing is then scheduled within 21 to 25 days, at which both parties can present evidence, call witnesses, and cross-examine the opposing party. The petitioner must prove harassment by clear and convincing evidence — a higher standard than the preponderance standard used in most civil cases.

If the court grants the order after hearing, the civil harassment restraining order can remain in effect for up to five years and may be renewed. The order typically prohibits the respondent from contacting, harassing, or coming within a specified distance of the petitioner, the petitioner's home, and the petitioner's workplace.

Workplace Violence Restraining Orders

Code of Civil Procedure Section 527.8 provides a parallel mechanism for workplace violence restraining orders. Under this statute, an employer may seek a restraining order on behalf of an employee who has suffered unlawful violence or a credible threat of violence from any individual that can reasonably be construed to be carried out at the workplace. This provision recognizes that workplace violence is a distinct category of risk that may require protective measures beyond what individual employees can obtain on their own.

The procedural framework mirrors that of civil harassment restraining orders: a temporary order may issue ex parte, followed by a hearing within 21 to 25 days. The employer must show by clear and convincing evidence that the employee has been subjected to unlawful violence or credible threats. Workplace violence restraining orders can protect not only the targeted employee but also other employees and members of the public who are present at the workplace.

Defending Against Injunctions

Not every request for an injunction is justified, and respondents have meaningful rights in injunction proceedings. A respondent can challenge the factual basis of the application, argue that the applicant has not demonstrated a likelihood of success on the merits, present evidence that the balance of hardships favors denying the injunction, or raise procedural defenses such as improper notice or insufficient evidence.

One of the most effective defenses against a preliminary injunction is demonstrating that the applicant has an adequate remedy at law — that is, money damages would fully compensate for the harm alleged. Injunctive relief is an equitable remedy, and courts generally will not grant it when the injury can be adequately redressed through a damages award. If the applicant's real complaint is a financial loss that can be quantified and compensated, the court may decline to issue an injunction and instead allow the case to proceed to trial on the damages claim alone.

Violation of any injunction or restraining order is a serious matter. It can result in contempt of court proceedings, fines, and even incarceration. Criminal penalties may also apply under Penal Code Section 166. Whether you are seeking injunctive relief or defending against it, the stakes are high and the procedural requirements are exacting. Legal counsel experienced in injunction practice is essential to navigating these proceedings effectively.