Task: sc_petitioner

What follows is an opinion from the Supreme Court of the United States. Your task is to identify the petitioner of the case. The petitioner is the party who petitioned the Supreme Court to review the case. This party is variously known as the petitioner or the appellant. Characterize the petitioner as the Court's opinion identifies them.

Identify the petitioner by the label given to the party in the opinion or judgment of the Court except where the Reports title a party as the "United States" or as a named state. Textual identification of parties is typically provided prior to Part I of the Court's opinion. The official syllabus, the summary that appears on the title page of the case, may be consulted as well. In describing the parties, the Court employs terminology that places them in the context of the specific lawsuit in which they are involved. For example, "employer" rather than "business" in a suit by an employee; as a "minority," "female," or "minority female" employee rather than "employee" in a suit alleging discrimination by an employer.

Also note that the Court's characterization of the parties applies whether the petitioner is actually single entity or whether many other persons or legal entities have associated themselves with the lawsuit. That is, the presence of the phrase, et al., following the name of a party does not preclude the Court from characterizing that party as though it were a single entity. Thus, identify a single petitioner, regardless of how many legal entities were actually involved. If a state (or one of its subdivisions) is a party, note only that a state is a party, not the state's name.

Justice O’Connor
delivered the opinion of the Court.
Section 510 of the Employee Retirement Income Security Act of 1974 (ERISA), 88 Stat. 895, makes it unlawful to “discharge, fine, suspend, expel, discipline, or discriminate against a participant or beneficiary [of an employee benefit plan] for the purpose of interfering with the attainment of any right to which such participant may become entitled under the plan.” 29 U. S. C. § 1140. The Court of Appeals for the Ninth Circuit held that § 510 only prohibits interference with the attainment of rights that are capable of “vesting,” as that term is defined in ERISA. We disagree.
I
The individual petitioners are former employees of respondent Santa Fe Terminal Services, Inc. (SFTS), a wholly owned subsidiary of respondent The Atchison, Topeka and Santa Fe Railway Co. (ATSF), which was responsible for transferring cargo between railcars and trucks at ATSF’s Hobart Yard in Los Angeles, California. While petitioners were employed by SFTS, they were entitled to retirement benefits under the Railroad Retirement Act of 1974, 88 Stat. 1312, as amended, 45 U. S. C. § 231 et seq., and to pension, health, and welfare benefits under collective bargaining agreements involving SFTS and the Teamsters Union. SFTS provided its workers with pension, health, and welfare benefits through employee benefit plans subject to ERISA’s comprehensive regulations.
In January 1990, ATSF entered into a formal “Service Agreement” with SFTS to have SFTS do the same “inter-modal” work it had done at the Hobart Yard for the previous 15 years without a contract. Seven weeks later, ATSF exercised its right to terminate the newly formed agreement and opened up the Hobart Yard work for competitive bidding. Respondent In-Terminal Services (ITS) was the successful bidder, and SFTS employees who declined to continue employment with ITS were terminated. ITS, unlike SFTS, was not obligated to make contributions to the Railroad Retirement Account under the Railroad Retirement Act. ITS also provided fewer pension and welfare benefits under its collective bargaining agreement with the Teamsters Union than had SFTS. Workers who continued their employment with ITS “lost their Railroad Retirement Act benefits” and “suffered a substantial reduction in Teamsters benefits.” 80 F. 3d 348, 350 (CA9 1996) (per curiam).
Petitioners sued respondents SFTS, ATSF, and ITS in the United States District Court for the Central District of California, alleging that respondents had violated §510 of ERISA by “diseharg[ing]” petitioners “for the purpose of interfering with the attainment of . . . right[s] to which” they would have “become entitled” under the ERISA pension and welfare plans adopted pursuant to the SFTS-Teamsters collective bargaining agreement. See App. to Pet. for Cert. 29a, Complaint ¶ 33. Had SFTS remained their employer, petitioners contended, they would have been entitled to assert claims for benefits under the SFTS-Teamsters benefit plans, at least until the collective bargaining agreement that gave rise to those plans expired. The substitution of ITS for SFTS, however, precluded them from asserting those claims and relegated them to asserting claims under the less generous ITS-Teamsters benefit plans. According to petitioners, the substitution “interfer[ed] with the attainment” of their “right” to assert those claims and violated §510. Respondents moved to dismiss these §510 claims, and the District Court granted the motion.
The Court of Appeals for the Ninth Circuit affirmed in part and reversed in part. 80 F. 3d 348 (1996). The court reinstated petitioners’ claim under §510 for interference with their pension benefits, concluding that § 510 “ ‘protects plan participants from termination motivated by an employer’s desire to prevent a pension from vesting.’ ” Id., at 350-351 (quoting Ingersoll-Rand Co. v. McClendon, 498 U. S. 133, 143 (1990)). But the Court of Appeals affirmed the dismissal of petitioners’ claim for interference with their welfare benefits. “Unlike pension benefits,” the Court of Appeals observed, “welfare benefits do not vest.” 80 F. 3d, at 351. As a result, the Court of Appeals noted, “employers remain free to unilaterally amend or eliminate [welfare] plans,” and “employees have no present ‘right’ to future, anticipated welfare benefits.’ ” Ibid. (emphasis deleted; internal quotation marks omitted). Because the “existence of a present ‘right’ is [a] prerequisite to section 510 relief,” the Court of Appeals concluded that § 510 did not state a cause of action for interference with welfare benefits. Ibid. We granted certiorari to resolve a conflict among the Courts of Appeals on this issue, 519 U. S. 1003 (1996), and now vacate the decision below and remand.
II
The Court of Appeals’ holding that § 510 bars interference only with vested rights is contradicted by the plain language of § 510. As noted above, that section makes it unlawful to “discharge ... a [plan] participant or beneficiary ... for the purpose of interfering with the attainment of any right to which such participant may become entitled under the plan.” 29 U. S. C. § 1140 (emphasis added). ERISA defines a “plan” to include both “an employee welfare benefit plan [and] an employee pension benefit plan,” §1002(3), and specifically exempts “employee welfare benefit plants]” from its stringent vesting requirements, see § 1051(1). Because a “plan” includes an “employee welfare benefit plan,” and because welfare plans offer benefits that do not “vest” (at least insofar as ERISA is concerned), Congress’ use of the word “plan” in §510 all but forecloses the argument that §510’s interference clause applies only to “vested” rights. Had Congress intended to confine §510’s protection to “vested” rights, it could have easily substituted the term “pension plan,” see 29 U. S. C. § 1002(2), for “plan,” or the term “nonforfeitable” right, see §1002(19), for “any right.” But §510 draws no distinction between those rights that “vest” under ERISA and those that do not.
The right that an employer or plan sponsor may enjoy in some circumstances to unilaterally amend or eliminate its welfare benefit plan does not, as the Court of Appeals apparently thought, justify a departure from § 510’s plain language. It is true that ERISA itself “does not regulate the substantive content of welfare-benefit plans.” Metropolitan Life Ins. Co. v. Massachusetts, 471 U. S. 724, 732 (1985). Thus, unless an employer contractually cedes its freedom, see, e. g., Adcox v. Teledyne, Inc., 21 F. 3d 1381, 1389 (CA6), cert. denied, 513 U. S. 871 (1994), it is “generally free under ERISA, for any reason at any time, to adopt, modify, or terminate [its] welfare pla[n].” Curtiss-Wright Corp. v. Schoonejongen, 514 U. S. 73, 78 (1995).
The flexibility an employer enjoys to amend or eliminate its welfare plan is not an accident; Congress recognized that “requir[ing] the vesting of these ancillary benefits would seriously complicate the administration and increase the cost of plans.” S. Rep. No. 93-383, p. 51 (1973). Giving employers this flexibility also encourages them to offer more generous benefits at the outset, since they are free to reduce benefits should economic conditions sour. If employers were locked into the plans they initially offered, “they would err initially on the side of omission.” Heath v. Varity Corp., 71 F. 3d 256, 258 (CA7 1995). Section 510 counterbalances this flexibility by ensuring that employers do not “circumvent the provision of promised benefits.” Ingersoll-Rand Co., supra, at 143 (citing S. Rep. No. 93-127, pp. 35-36 (1973); H. R. Rep. No. 93-533, p. 17 (1973)). In short, “§510 helps to make promises credible.” Heath, supra, at 258. An employer may, of course, retain the unfettered right to alter its promises, but to do so it must follow the formal procedures set forth in the plan. See 29 U. S. C. § 1102(b)(3) (requiring plan to “provide a procedure for amending such plan”); Schoonejongen, supra, at 78 (observing that the “cognizable claim [under ERISA] is that the company did not [amend its welfare benefit plan] in a permissible manner”). Adherence to these formal procedures “increases the likelihood that proposed plan amendments, which are fairly serious events, are recognized as such and given the special consideration they deserve.” Schoonejongen, supra, at 82. The formal amendment process would be undermined if §510 did not apply because employers could “informally” amend their plans one participant at a time. Thus, the power to amend or abolish a welfare benefit plan does not include the power to “discharge, fine, suspend, expel, discipline, or discriminate against” the plan’s participants and beneficiaries “for the purpose of interfering with [their] attainment of . . . right[s].. . under the plan.” To be sure, when an employer acts without this purpose, as could be the case when making fundamental business decisions, such actions are not barred by §510. But in the case where an employer acts with a purpose that triggers the protection of §510, any tension that might exist between an employer’s power to amend the plan and a participant’s rights under § 510 is the product of a careful balance of competing interests, and is most surely not the type of “absurd or glaringly unjust” result, Ingalls Shipbuilding, Inc. v. Director, Office of Workers’ Compensation Programs, 519 U. S. 248, 261 (1997), that would warrant departure from the plain language of § 510.
Respondents argue that the Court of Appeals’ decision must nevertheless be affirmed because §510, when applied to benefits that do not “vest,” only protects an employee’s right to cross the “threshold of eligibility” for welfare benefits. See Brief for Respondent Atchison, Topeka & Santa Fe Railway Co. et al. 18. In other words, argue respondents, an employee who is eligible to receive benefits under an ERISA welfare benefit plan has already “attainted]” her “right[s]” under the plan, so that any subsequent actions taken by an employer cannot, by definition, “interfer[e]” with the “attainment of . . . right[s]” under the plan. According to respondents, petitioners were eligible to receive welfare benefits under the SFTS-Teamsters plan at the time they were discharged, so they cannot state a claim under §510. The Court of Appeals’ approach precluded it from evaluating this argument, and others presented to us, and we see no reason not to allow it the first opportunity to consider these-matters on remand.
We therefore vacate the judgment of the Court of Appeals and remand the case for further proceedings consistent with this opinion.
It is so ordered.
See Shahid v. Ford Motor Co., 76 F. 3d 1404, 1411 (CA6 1996) (holding that § 510 draws no distinction between benefits that vest and those that do not); Heath v. Varity Corp., 71 F. 3d 256, 258 (CA7 1995) (same); Seaman v. Arvida Realty Sales, 985 F. 2d 543, 546 (CA11) (same), cert. denied, 510 U. S. 916 (1993); see also McGann v. H & H Music Co., 946 F. 2d 401, 408 (CA5 1991) (implying the same), cert. denied sub nom. Greenburg v. H & H Music Co., 506 U. S. 981 (1992); Andes v. Ford Motor Co., 70 F. 3d 1332, 1336 (CADC 1995) (implying the same).

Question: Who is the petitioner of the case?
年. attorney general of the United States, or his office
数. specified state board or department of education
日. city, town, township, village, or borough government or governmental unit
的. state commission, board, committee, or authority
月. county government or county governmental unit, except school district
用. court or judicial district
成. state department or agency
名. governmental employee or job applicant
时. female governmental employee or job applicant
件. minority governmental employee or job applicant
一. minority female governmental employee or job applicant
请. not listed among agencies in the first Administrative Action variable
中. retired or former governmental employee
据. U.S. House of Representatives
码. interstate compact
不. judge
新. state legislature, house, or committee
文. local governmental unit other than a county, city, town, township, village, or borough
下. governmental official, or an official of an agency established under an interstate compact
分. state or U.S. supreme court
入. local school district or board of education
人. U.S. Senate
功. U.S. senator
上. foreign nation or instrumentality
户. state or local governmental taxpayer, or executor of the estate of
为. state college or university
间. United States
号. State
取. person accused, indicted, or suspected of crime
回. advertising business or agency
在. agent, fiduciary, trustee, or executor
页. airplane manufacturer, or manufacturer of parts of airplanes
字. airline
有. distributor, importer, or exporter of alcoholic beverages
个. alien, person subject to a denaturalization proceeding, or one whose citizenship is revoked
作. American Medical Association
示. National Railroad Passenger Corp.
出. amusement establishment, or recreational facility
是. arrested person, or pretrial detainee
失. attorney, or person acting as such;includes bar applicant or law student, or law firm or bar association
表. author, copyright holder
除. bank, savings and loan, credit union, investment company
加. bankrupt person or business, or business in reorganization
败. establishment serving liquor by the glass, or package liquor store
生. water transportation, stevedore
信. bookstore, newsstand, printer, bindery, purveyor or distributor of books or magazines
类. brewery, distillery
置. broker, stock exchange, investment or securities firm
理. construction industry
本. bus or motorized passenger transportation vehicle
息. business, corporation
行. buyer, purchaser
定. cable TV
改. car dealer
市. person convicted of crime
期. tangible property, other than real estate, including contraband
以. chemical company
修. child, children, including adopted or illegitimate
元. religious organization, institution, or person
方. private club or facility
录. coal company or coal mine operator
区. computer business or manufacturer, hardware or software
单. consumer, consumer organization
位. creditor, including institution appearing as such; e.g., a finance company
型. person allegedly criminally insane or mentally incompetent to stand trial
法. defendant
县. debtor
存. real estate developer
品. disabled person or disability benefit claimant
前. distributor
称. person subject to selective service, including conscientious objector
注. drug manufacturer
值. druggist, pharmacist, pharmacy
输. employee, or job applicant, including beneficiaries of
建. employer-employee trust agreement, employee health and welfare fund, or multi-employer pension plan
能. electric equipment manufacturer
大. electric or hydroelectric power utility, power cooperative, or gas and electric company
例. eleemosynary institution or person
度. environmental organization
始. employer. If employer's relations with employees are governed by the nature of the employer's business (e.g., railroad, boat), rather than labor law generally, the more specific designation is used in place of Employer.
到. farmer, farm worker, or farm organization
面. father
载. female employee or job applicant
点. female
密. movie, play, pictorial representation, theatrical production, actor, or exhibitor or distributor of
动. fisherman or fishing company
果. food, meat packing, or processing company, stockyard
图. foreign (non-American) nongovernmental entity
提. franchiser
发. franchisee
式. lesbian, gay, bisexual, transexual person or organization
国. person who guarantees another's obligations
登. handicapped individual, or organization of devoted to
错. health organization or person, nursing home, medical clinic or laboratory, chiropractor
者. heir, or beneficiary, or person so claiming to be
认. hospital, medical center
误. husband, or ex-husband
接. involuntarily committed mental patient
关. Indian, including Indian tribe or nation
重. insurance company, or surety
第. inventor, patent assigner, trademark owner or holder
地. investor
如. injured person or legal entity, nonphysically and non-employment related
设. juvenile
目. government contractor
开. holder of a license or permit, or applicant therefor
事. magazine
可. male
要. medical or Medicaid claimant
代. medical supply or manufacturing co.
小. racial or ethnic minority employee or job applicant
选. minority female employee or job applicant
标. manufacturer
明. management, executive officer, or director, of business entity
编. military personnel, or dependent of, including reservist
求. mining company or miner, excluding coal, oil, or pipeline company
列. mother
网. auto manufacturer
万. newspaper, newsletter, journal of opinion, news service
最. radio and television network, except cable tv
器. nonprofit organization or business
所. nonresident
内. nuclear power plant or facility
体. owner, landlord, or claimant to ownership, fee interest, or possession of land as well as chattels
通. shareholders to whom a tender offer is made
务. tender offer
此. oil company, or natural gas producer
商. elderly person, or organization dedicated to the elderly
序. out of state noncriminal defendant
化. political action committee
消. parent or parents
否. parking lot or service
保. patient of a health professional
使. telephone, telecommunications, or telegraph company
次. physician, MD or DO, dentist, or medical society
机. public interest organization
对. physically injured person, including wrongful death, who is not an employee
量. pipe line company
查. package, luggage, container
部. political candidate, activist, committee, party, party member, organization, or elected official
性. indigent, needy, welfare recipient
和. indigent defendant
更. private person
后. prisoner, inmate of penal institution
证. professional organization, business, or person
题. probationer, or parolee
确. protester, demonstrator, picketer or pamphleteer (non-employment related), or non-indigent loiterer
格. public utility
了. publisher, publishing company
于. radio station
金. racial or ethnic minority
公. person or organization protesting racial or ethnic segregation or discrimination
午. racial or ethnic minority student or applicant for admission to an educational institution
円. realtor
片. journalist, columnist, member of the news media
空. resident
态. restaurant, food vendor
管. retarded person, or mental incompetent
主. retired or former employee
天. railroad
自. private school, college, or university
我. seller or vendor
全. shipper, including importer and exporter
今. shopping center, mall
来. spouse, or former spouse
正. stockholder, shareholder, or bondholder
说. retail business or outlet
意. student, or applicant for admission to an educational institution
送. taxpayer or executor of taxpayer's estate, federal only
容. tenant or lessee
已. theater, studio
结. forest products, lumber, or logging company
会. person traveling or wishing to travel abroad, or overseas travel agent
段. trucking company, or motor carrier
计. television station
源. union member
色. unemployed person or unemployment compensation applicant or claimant
時. union, labor organization, or official of
交. veteran
系. voter, prospective voter, elector, or a nonelective official seeking reapportionment or redistricting of legislative districts (POL)
过. wholesale trade
电. wife, or ex-wife
询. witness, or person under subpoena
符. network
未. slave
程. slave-owner
常. bank of the united states
条. timber company
当. u.s. job applicants or employees
情. Army and Air Force Exchange Service
口. Atomic Energy Commission
合. Secretary or administrative unit or personnel of the U.S. Air Force
车. Department or Secretary of Agriculture
实. Alien Property Custodian
组. Secretary or administrative unit or personnel of the U.S. Army
版. Board of Immigration Appeals
周. Bureau of Indian Affairs
址. Bonneville Power Administration
记. Benefits Review Board
二. Civil Aeronautics Board
同. Bureau of the Census
业. Central Intelligence Agency
权. Commodity Futures Trading Commission
其. Department or Secretary of Commerce
进. Comptroller of Currency
试. Consumer Product Safety Commission
验. Civil Rights Commission
料. Civil Service Commission, U.S.
传. Customs Service or Commissioner of Customs
述. Defense Base Closure and REalignment Commission
集. Drug Enforcement Agency
多. Department or Secretary of Defense (and Department or Secretary of War)
无. Department or Secretary of Energy
员. Department or Secretary of the Interior
报. Department of Justice or Attorney General
他. Department or Secretary of State
無. Department or Secretary of Transportation
服. Department or Secretary of Education
线. U.S. Employees' Compensation Commission, or Commissioner
这. Equal Employment Opportunity Commission
制. Environmental Protection Agency or Administrator
将. Federal Aviation Agency or Administration
处. Federal Bureau of Investigation or Director
高. Federal Bureau of Prisons
子. Farm Credit Administration
道. Federal Communications Commission (including a predecessor, Federal Radio Commission)
章. Federal Credit Union Administration
手. Food and Drug Administration
库. Federal Deposit Insurance Corporation
三. Federal Energy Administration
从. Federal Election Commission
支. Federal Energy Regulatory Commission
家. Federal Housing Administration
长. Federal Home Loan Bank Board
付. Federal Labor Relations Authority
秒. Federal Maritime Board
路. Federal Maritime Commission
完. Farmers Home Administration
象. Federal Parole Board
则. Federal Power Commission
现. Federal Railroad Administration
京. Federal Reserve Board of Governors
转. Federal Reserve System
辑. Federal Savings and Loan Insurance Corporation
限. Federal Trade Commission
力. Federal Works Administration, or Administrator
学. General Accounting Office
外. Comptroller General
调. General Services Administration
项. Department or Secretary of Health, Education and Welfare
北. Department or Secretary of Health and Human Services
工. Department or Secretary of Housing and Urban Development
笑. Interstate Commerce Commission
监. Indian Claims Commission
任. Immigration and Naturalization Service, or Director of, or District Director of, or Immigration and Naturalization Enforcement
相. Internal Revenue Service, Collector, Commissioner, or District Director of
微. Information Security Oversight Office
册. Department or Secretary of Labor
联. Loyalty Review Board
平. Legal Services Corporation
增. Merit Systems Protection Board
听. Multistate Tax Commission
解. National Aeronautics and Space Administration
等. Secretary or administrative unit of the U.S. Navy
得. National Credit Union Administration
收. National Endowment for the Arts
安. National Enforcement Commission
价. National Highway Traffic Safety Administration
藏. National Labor Relations Board, or regional office or officer
命. National Mediation Board
应. National Railroad Adjustment Board
看. Nuclear Regulatory Commission
索. National Security Agency
资. Office of Economic Opportunity
产. Office of Management and Budget
串. Office of Price Administration, or Price Administrator
布. Office of Personnel Management
原. Occupational Safety and Health Administration
知. Occupational Safety and Health Review Commission
级. Office of Workers' Compensation Programs
水. Patent Office, or Commissioner of, or Board of Appeals of
击. Pay Board (established under the Economic Stabilization Act of 1970)
好. Pension Benefit Guaranty Corporation
物. U.S. Public Health Service
放. Postal Rate Commission
亿. Provider Reimbursement Review Board
经. Renegotiation Board
模. Railroad Adjustment Board
之. Railroad Retirement Board
台. Subversive Activities Control Board
州. Small Business Administration
配. Securities and Exchange Commission
画. Social Security Administration or Commissioner
统. Selective Service System
共. Department or Secretary of the Treasury
连. Tennessee Valley Authority
海. United States Forest Service
节. United States Parole Commission
退. Postal Service and Post Office, or Postmaster General, or Postmaster
間. United States Sentencing Commission
比. Veterans' Administration
问. War Production Board
至. Wage Stabilization Board
备. General Land Office of Commissioners
你. Transportation Security Administration
黑. Surface Transportation Board
或. U.S. Shipping Board Emergency Fleet Corp.
与. Reconstruction Finance Corp.
影. Department or Secretary of Homeland Security
话. Unidentifiable
视. International Entity
Answer:

Answer: 输