Plumbers & Pipefitters Local Union No. 630 Pension-Annuity Trust Fund v. Arbitron, Inc.

*337 OPINION AND ORDER

PAUL A. ENGELMAYER, District Judge:

This decision addresses a discovery dispute. Defendant Arbitron, Inc., moves for an order directing the lead plaintiff, Plumbers and Pipefitters Local Union No. 630 Pension-Annuity Trust Fund (Plaintiff), to disclose the names of 11 former Arbitron employees whom the Complaint designates as “Confidential Informants” (CIs). Arbitron also seeks an order directing Plaintiff to produce all documents that these 11 CIs provided to Plaintiffs counsel.

For the reasons that follow, Arbitron’s motion to compel disclosure of the names of the CIs is…