In a negligence action to recover damages for personal injuries, the plaintiff appeals from an order of the Supreme Court, Nassau County (Roncallo, J.), dated October 8, 1987, which (1) denied his motion to set the action down for an inquest, and (2) granted the defendant’s cross motion to vacate her default in answering and to compel the plaintiff to accept her answer on the condition that the defendant pay to the plaintiff the sum of $250.
The Supreme Court’s denial of the plaintiffs motion to set this action down for an inquest and its granting of the defendant’s cross motion to vacate her default and to compel the plaintiff to accept the answer was an improvident exercise of discretion. It was incumbent upon the defendant to show a reasonable excuse for the four-month delay in serving her answer (CPLR 3012 [d]; 5015 [a]). Although a default resulting from "law office failure” may be excused (CPLR 2005), in this case the only excuse offered was "the administrative delay ostensibly caused by the [defendant’s insurance carrier]” (emphasis supplied). The defendant failed to investigate the reason for the delay or to advise the Supreme Court or this court of "the particular excuse for the delay” (La Buda v Brookhaven Mem. Hosp. Med. Center,
