SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12B-25 Commission File Number: 333-13143 NOTIFICATION OF LATE FILING (Check One): [ ] Form 10-K [X] Form 11-K [ ] Form 20-F [ ] Form 10-Q [ ] Form N-SAR For Period Ended: December 31, 1998 [ ] Transition Report on Form 10-K [ ] Transition Report on Form 10-Q [ ] Transition Report on Form 20-F [ ] Transition Report on Form N-SAR [ ] Transition Report on Form 11-K For the Transition Period Ended: Read attached instruction sheet before preparing form. Please print or type. Nothing in this form shall be construed to imply that the Commission has verified any information contained herein. If the notification relates to a portion of the filing check above, identify the item(s) to which the notification relates: PART I REGISTRANT INFORMATION Full name of registrant: MILLENNIUM SAVINGS & INVESTMENT PLAN Former name if applicable: QUANTUM CHEMICAL RETIREMENT SAVINGS & INVESTMENT PLAN Address of principal executive office (Street and number): c/o MILLENNIUM CHEMICALS INC., 230 Half Mile Road, P.O. Box 7015 City, state and zip code: Red Bank, New Jersey 07701 PART II RULE 12-b-25 (b) AND (c) If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate.) [X] (a) The reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense; (b) The subject annual report, semi-annual report, transition report on Form 10-K, 20-F, 11-K or Form N-SAR, or portion thereof will be filed on or before the 15th calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, or portion thereof will be filed on or before the fifth calendar day following the prescribed due date; and (c) The accountant's statement or other exhibit required by Rule 12b-25(c) has been attached if applicable. PART III NARRATIVE State below in reasonable detail the reasons why Form 10-K, 11-K, 20-F, 10-Q, N-SAR or the transition report portion thereof could not be filed within the prescribed time period. (Attach extra sheets if needed): Prior to June 1, 1998, the Millennium Savings and Investment Plan (the "Plan") was a participant in the Millennium Chemicals Inc. Retirement Savings and Investment Trust (the "Master Trust") along with the Quantum Chemicals Retirement Savings and Investment Plan for Hourly Employees (the "Quantum Hourly Plan"). In December 1997, Millennium Chemicals, Inc. (the "Company") entered into a joint venture at which time approximately 55% of the participants in the Plan became employees of the joint venture. On June 1, 1998, the Plan assets related to the employees of the joint venture were transferred out of the Master Trust to a separate trust maintained by the joint venture together with the entire Quantum Hourly Plan. Also, effective June 1, 1998 the remaining assets of the Plan were transferred to a new trust. As a result of the transfers of assets from the Master Trust, the Company, its recordkeeper and the successor trustee of the Plan are in the process of reconciling certain information with respect to the value of assets transferred from the Master Trust. Accordingly, audited financial statements are not yet available in order to complete the Form 11-K for the Plan for the year ended December 31, 1998. PART IV OTHER INFORMATION (1) Name and telephone number of person to contact in regard to this notification: C. William Carmean (732) 933-5000 (Name) (Area Code) (Telephone Number) (2) Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If the answer is no, identify report(s). Yes [X] No [ ] (3) Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? Yes [ ] No [X] If so: attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made. MILLENNIUM SAVINGS & INVESTMENT PLAN (Name of Registrant as Specified in Charter) Has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized. Date: June 30, 1999 By: /s/ John E. Lushefski John E. Lushefski Member, Benefits Committee