Sovereign immunity is the default rule; waiver is the exception that makes suit against a government possible. Because waiver strips the government of a jurisdictional shield, courts construe it narrowly and generally require it to be unequivocally expressed, either in the constitutional or statutory text itself or through conduct courts treat as consent, such as removing a case to federal court.

Waiver can be express, as in a statute authorizing suit against the government for specified claims, or it can arise from litigation conduct, though courts are cautious about implying waiver from participation in litigation alone. Waivers are also frequently conditional: a statute may waive immunity for certain claims while preserving it for others, attach procedural prerequisites like notice periods or damages caps, or waive immunity only in a particular forum. Scope matters as much as existence — a waiver good for one type of claim does not automatically extend to a related but distinct theory of liability.

In a simulated matter, waiver scope functions as a dial that can silently cap the available relief even after liability looks strong on the merits — sweeping it shows a user how a narrow statutory waiver can flatten the upper end of a damages distribution regardless of how the underlying facts play out, always framed as a modeling exercise rather than a claim about any specific waiver's actual reach.

Litigators pursuing a claim against a government entity identify the specific statutory waiver that authorizes the suit, confirm the claim falls within its scope, and comply with any attached conditions — notice requirements, filing deadlines, or damages limits — since failure to satisfy a condition on the waiver can be treated as a jurisdictional defect rather than a curable pleading error.