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29 U.S.C. § 158 — Unfair labor practices
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Page 41
TITLE 29—LABOR
§ 158
§ 158. Unfair labor practices
(a) Unfair labor practices by employer
It shall be an unfair labor practice for an em-
ployer—
(1) to interfere with, restrain, or coerce em-
ployees in the exercise of the rights guaran-
teed in section 157 of this title;
(2) to dominate or interfere with the forma-
tion or administration of any labor organiza-
tion or contribute financial or other support
to it: Provided, That subject to rules and regu-
lations made and published by the Board pur-
suant to section 156 of this title, an employer
shall not be prohibited from permitting em-
ployees to confer with him during working
hours without loss of time or pay;
(3) by discrimination in regard to hire or
tenure of employment or any term or condi-
tion of employment to encourage or discour-
age membership in any labor organization:
Provided, That nothing in this subchapter, or
in any other statute of the United States,
shall preclude an employer from making an
agreement with a labor organization (not es-
tablished, maintained, or assisted by any ac-
tion defined in this subsection as an unfair
labor practice) to require as a condition of em-
ployment membership therein on or after the
thirtieth day following the beginning of such
employment or the effective date of such
agreement, whichever is the later, (i) if such
labor organization is the representative of the
employees as provided in section 159(a) of this
title, in the appropriate collective-bargaining
unit covered by such agreement when made,
and (ii) unless following an election held as
provided in section 159(e) of this title within
one year preceding the effective date of such
agreement, the Board shall have certified that
at least a majority of the employees eligible
to vote
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Page 41
TITLE 29—LABOR
§ 158
§ 158. Unfair labor practices
(a) Unfair labor practices by employer
It shall be an unfair labor practice for an em-
ployer—
(1) to interfere with, restrain, or coerce em-
ployees in the exercise of the rights guaran-
teed in section 157 of this title;
(2) to dominate or interfere with the forma-
tion or administration of any labor organiza-
tion or contribute financial or other support
to it: Provided, That subject to rules and regu-
lations made and published by the Board pur-
suant to section 156 of this title, an employer
shall not be prohibited from permitting em-
ployees to confer with him during working
hours without loss of time or pay;
(3) by discrimination in regard to hire or
tenure of employment or any term or condi-
tion of employment to encourage or discour-
age membership in any labor organization:
Provided, That nothing in this subchapter, or
in any other statute of the United States,
shall preclude an employer from making an
agreement with a labor organization (not es-
tablished, maintained, or assisted by any ac-
tion defined in this subsection as an unfair
labor practice) to require as a condition of em-
ployment membership therein on or after the
thirtieth day following the beginning of such
employment or the effective date of such
agreement, whichever is the later, (i) if such
labor organization is the representative of the
employees as provided in section 159(a) of this
title, in the appropriate collective-bargaining
unit covered by such agreement when made,
and (ii) unless following an election held as
provided in section 159(e) of this title within
one year preceding the effective date of such
agreement, the Board shall have certified that
at least a majority of the employees eligible
to vote in such election have voted to rescind
the authority of such labor organization to
make such an agreement: Provided further,
That no employer shall justify any discrimina-
tion against an employee for nonmembership
in a labor organization (A) if he has reasonable
grounds for believing that such membership
was not available to the employee on the same
terms and conditions generally applicable to
other members, or (B) if he has reasonable
grounds for believing that membership was de-
nied or terminated for reasons other than the
failure of the employee to tender the periodic
dues and the initiation fees uniformly required
as a condition of acquiring or retaining mem-
bership;
(4) to discharge or otherwise discriminate
against an employee because he has filed
charges or given testimony under this sub-
chapter;
(5) to refuse to bargain collectively with the
representatives of his employees, subject to
the provisions of section 159(a) of this title.
(b) Unfair labor practices by labor organization
It shall be an unfair labor practice for a labor
organization or its agents—
(1) to restrain or coerce (A) employees in the
exercise of the rights guaranteed in section 157
of this title: Provided, That this paragraph
shall not impair the right of a labor organiza-
tion to prescribe its own rules with respect to
the acquisition or retention of membership
therein; or (B) an employer in the selection of
his representatives for the purposes of collec-
tive bargaining or the adjustment of griev-
ances;
(2) to cause or attempt to cause an employer
to discriminate against an employee in viola-
tion of subsection (a)(3) or to discriminate
against an employee with respect to whom
membership in such organization has been de-
nied or terminated on some ground other than
his failure to tender the periodic dues and the
initiation fees uniformly required as a condi-
tion of acquiring or retaining membership;
(3) to refuse to bargain collectively with an
employer, provided it is the representative of
his employees subject to the provisions of sec-
tion 159(a) of this title;
(4)(i) to engage in, or to induce or encourage
any individual employed by any person en-
gaged in commerce or in an industry affecting
commerce to engage in, a strike or a refusal in
the course of his employment to use, manufac-
ture, process, transport, or otherwise handle
or work on any goods, articles, materials, or
commodities or to perform any services; or (ii)
to threaten, coerce, or restrain any person en-
gaged in commerce or in an industry affecting
commerce, where in either case an object
thereof is—
(A) forcing or requiring any employer or
self-employed person to join any labor or
employer organization or to enter into any
agreement which is prohibited by subsection
(e);
(B) forcing or requiring any person to
cease using, selling, handling, transporting,
or otherwise dealing in the products of any
other producer, processor, or manufacturer,
or to cease doing business with any other
person, or forcing or requiring any other em-
ployer to recognize or bargain with a labor
organization as the representative of his em-
ployees unless such labor organization has
been certified as the representative of such
employees under the provisions of section
159 of this title: Provided, That nothing con-
tained in this clause (B) shall be construed
to make unlawful, where not otherwise un-
lawful, any primary strike or primary pick-
eting;
(C) forcing or requiring any employer to
recognize or bargain with a particular labor
organization as the representative of his em-
ployees if another labor organization has
been certified as the representative of such
employees under the provisions of section
159 of this title;
(D) forcing or requiring any employer to
assign particular work to employees in a
particular labor organization or in a par-
ticular trade, craft, or class rather than to
employees in another labor organization or
in another trade, craft, or class, unless such
employer is failing to conform to an order or
certification of the Board determining the
bargaining representative for employees per-
forming such work:
Provided, That nothing contained in this sub-
section shall be construed to make unlawful a
Page 42
TITLE 29—LABOR
§ 158
refusal by any person to enter upon the prem-
ises of any employer (other than his own em-
ployer), if the employees of such employer are
engaged in a strike ratified or approved by a
representative of such employees whom such
employer is required to recognize under this
subchapter: Provided further, That for the pur-
poses of this paragraph (4) only, nothing con-
tained in such paragraph shall be construed to
prohibit publicity, other than picketing, for
the purpose of truthfully advising the public,
including consumers and members of a labor
organization, that a product or products are
produced by an employer with whom the labor
organization has a primary dispute and are
distributed by another employer, as long as
such publicity does not have an effect of in-
ducing any individual employed by any person
other than the primary employer in the course
of his employment to refuse to pick up, de-
liver, or transport any goods, or not to per-
form any services, at the establishment of the
employer engaged in such distribution;
(5) to require of employees covered by an
agreement authorized under subsection (a)(3)
the payment, as a condition precedent to be-
coming a member of such organization, of a
fee in an amount which the Board finds exces-
sive or discriminatory under all the cir-
cumstances. In making such a finding, the
Board shall consider, among other relevant
factors, the practices and customs of labor or-
ganizations in the particular industry, and the
wages currently paid to the employees af-
fected;
(6) to cause or attempt to cause an employer
to pay or deliver or agree to pay or deliver any
money or other thing of value, in the nature of
an exaction, for services which are not per-
formed or not to be performed; and
(7) to picket or cause to be picketed, or
threaten to picket or cause to be picketed, any
employer where an object thereof is forcing or
requiring an employer to recognize or bargain
with a labor organization as the representa-
tive of his employees, or forcing or requiring
the employees of an employer to accept or se-
lect such labor organization as their collective
bargaining representative, unless such labor
organization is currently certified as the rep-
resentative of such employees:
(A) where the employer has lawfully recog-
nized in accordance with this subchapter any
other labor organization and a question con-
cerning
representation
may
not
appro-
priately be raised under section 159(c) of this
title,
(B) where within the preceding twelve
months a valid election under section 159(c)
of this title has been conducted, or
(C) where such picketing has been con-
ducted without a petition under section
159(c) of this title being filed within a rea-
sonable period of time not to exceed thirty
days from the commencement of such pick-
eting: Provided, That when such a petition
has been filed the Board shall forthwith,
without regard to the provisions of section
159(c)(1) of this title or the absence of a
showing of a substantial interest on the part
of the labor organization, direct an election
in such unit as the Board finds to be appro-
priate and shall certify the results thereof:
Provided further, That nothing in this sub-
paragraph (C) shall be construed to prohibit
any picketing or other publicity for the pur-
pose of truthfully advising the public (in-
cluding consumers) that an employer does
not employ members of, or have a contract
with, a labor organization, unless an effect
of such picketing is to induce any individual
employed by any other person in the course
of his employment, not to pick up, deliver or
transport any goods or not to perform any
services.
Nothing in this paragraph (7) shall be con-
strued to permit any act which would other-
wise be an unfair labor practice under this
subsection.
(c) Expression of views without threat of reprisal
or force or promise of benefit
The expressing of any views, argument, or
opinion, or the dissemination thereof, whether
in written, printed, graphic, or visual form,
shall not constitute or be evidence of an unfair
labor practice under any of the provisions of
this subchapter, if such expression contains no
threat of reprisal or force or promise of benefit.
(d) Obligation to bargain collectively
For the purposes of this section, to bargain
collectively is the performance of the mutual
obligation of the employer and the representa-
tive of the employees to meet at reasonable
times and confer in good faith with respect to
wages, hours, and other terms and conditions of
employment, or the negotiation of an agree-
ment, or any question arising thereunder, and
the execution of a written contract incor-
porating any agreement reached if requested by
either party, but such obligation does not com-
pel either party to agree to a proposal or require
the making of a concession: Provided, That
where there is in effect a collective-bargaining
contract covering employees in an industry af-
fecting commerce, the duty to bargain collec-
tively shall also mean that no party to such con-
tract shall terminate or modify such contract,
unless the party desiring such termination or
modification—
(1) serves a written notice upon the other
party to the contract of the proposed termi-
nation or modification sixty days prior to the
expiration date thereof, or in the event such
contract contains no expiration date, sixty
days prior to the time it is proposed to make
such termination or modification;
(2) offers to meet and confer with the other
party for the purpose of negotiating a new
contract or a contract containing the proposed
modifications;
(3) notifies the Federal Mediation and Con-
ciliation Service within thirty days after such
notice of the existence of a dispute, and simul-
taneously therewith notifies any State or Ter-
ritorial agency established to mediate and
conciliate disputes within the State or Terri-
tory where the dispute occurred, provided no
agreement has been reached by that time; and
(4) continues in full force and effect, without
resorting to strike or lock-out, all the terms
Page 43
TITLE 29—LABOR
§ 158
1 So in original. Probably should be ‘‘unenforceable’’.
and conditions of the existing contract for a
period of sixty days after such notice is given
or until the expiration date of such contract,
whichever occurs later:
The duties imposed upon employers, employees,
and labor organizations by paragraphs (2) to (4)
of this subsection shall become inapplicable
upon an intervening certification of the Board,
under which the labor organization or indi-
vidual, which is a party to the contract, has
been superseded as or ceased to be the represent-
ative of the employees subject to the provisions
of section 159(a) of this title, and the duties so
imposed shall not be construed as requiring ei-
ther party to discuss or agree to any modifica-
tion of the terms and conditions contained in a
contract for a fixed period, if such modification
is to become effective before such terms and
conditions can be reopened under the provisions
of the contract. Any employee who engages in a
strike within any notice period specified in this
subsection, or who engages in any strike within
the appropriate period specified in subsection (g)
of this section, shall lose his status as an em-
ployee of the employer engaged in the particular
labor dispute, for the purposes of sections 158,
159, and 160 of this title, but such loss of status
for such employee shall terminate if and when
he is reemployed by such employer. Whenever
the collective bargaining involves employees of
a health care institution, the provisions of this
subsection shall be modified as follows:
(A) The notice of paragraph (1) of this sub-
section shall be ninety days; the notice of
paragraph (3) of this subsection shall be sixty
days; and the contract period of paragraph (4)
of this subsection shall be ninety days.
(B) Where the bargaining is for an initial
agreement following certification or recogni-
tion, at least thirty days’ notice of the exist-
ence of a dispute shall be given by the labor
organization to the agencies set forth in para-
graph (3) of this subsection.
(C) After notice is given to the Federal Medi-
ation and Conciliation Service under either
clause (A) or (B) of this sentence, the Service
shall promptly communicate with the parties
and use its best efforts, by mediation and con-
ciliation, to bring them to agreement. The
parties shall participate fully and promptly in
such meetings as may be undertaken by the
Service for the purpose of aiding in a settle-
ment of the dispute.
(e) Enforceability of contract or agreement to
boycott any other employer; exception
It shall be an unfair labor practice for any
labor organization and any employer to enter
into any contract or agreement, express or im-
plied, whereby such employer ceases or refrains
or agrees to cease or refrain from handling,
using, selling, transporting or otherwise dealing
in any of the products of any other employer, or
to cease doing business with any other person,
and any contract or agreement entered into
heretofore or hereafter containing such an
agreement shall be to such extent unenforcible 1
and void: Provided, That nothing in this sub-
section shall apply to an agreement between a
labor organization and an employer in the con-
struction industry relating to the contracting or
subcontracting of work to be done at the site of
the construction, alteration, painting, or repair
of a building, structure, or other work: Provided
further, That for the purposes of this subsection
and subsection (b)(4)(B) the terms ‘‘any em-
ployer’’, ‘‘any person engaged in commerce or an
industry affecting commerce’’, and ‘‘any per-
son’’ when used in relation to the terms ‘‘any
other producer, processor, or manufacturer’’,
‘‘any other employer’’, or ‘‘any other person’’
shall not include persons in the relation of a job-
ber, manufacturer, contractor, or subcontractor
working on the goods or premises of the jobber
or manufacturer or performing parts of an inte-
grated process of production in the apparel and
clothing industry: Provided further, That nothing
in this subchapter shall prohibit the enforce-
ment of any agreement which is within the fore-
going exception.
(f) Agreement covering employees in the build-
ing and construction industry
It shall not be an unfair labor practice under
subsections (a) and (b) of this section for an em-
ployer engaged primarily in the building and
construction industry to make an agreement
covering employees engaged (or who, upon their
employment, will be engaged) in the building
and construction industry with a labor organiza-
tion of which building and construction employ-
ees are members (not established, maintained,
or assisted by any action defined in subsection
(a) as an unfair labor practice) because (1) the
majority status of such labor organization has
not been established under the provisions of sec-
tion 159 of this title prior to the making of such
agreement, or (2) such agreement requires as a
condition of employment, membership in such
labor organization after the seventh day fol-
lowing the beginning of such employment or the
effective date of the agreement, whichever is
later, or (3) such agreement requires the em-
ployer to notify such labor organization of op-
portunities for employment with such employer,
or gives such labor organization an opportunity
to refer qualified applicants for such employ-
ment, or (4) such agreement specifies minimum
training or experience qualifications for employ-
ment or provides for priority in opportunities
for employment based upon length of service
with such employer, in the industry or in the
particular geographical area: Provided, That
nothing in this subsection shall set aside the
final proviso to subsection (a)(3): Provided fur-
ther, That any agreement which would be in-
valid, but for clause (1) of this subsection, shall
not be a bar to a petition filed pursuant to sec-
tion 159(c) or 159(e) of this title.
(g) Notification of intention to strike or picket at
any health care institution
A labor organization before engaging in any
strike, picketing, or other concerted refusal to
work at any health care institution shall, not
less than ten days prior to such action, notify
the institution in writing and the Federal Medi-
ation and Conciliation Service of that intention,
except that in the case of bargaining for an ini-
tial agreement following certification or rec-
ognition the notice required by this subsection
Page 44
TITLE 29—LABOR
§ 158a
shall not be given until the expiration of the pe-
riod specified in clause (B) of the last sentence
of subsection (d). The notice shall state the date
and time that such action will commence. The
notice, once given, may be extended by the writ-
ten agreement of both parties.
(July 5, 1935, ch. 372, § 8, 49 Stat. 452; June 23,
1947, ch. 120, title I, § 101, 61 Stat. 140; Oct. 22,
1951, ch. 534, § 1(b), 65 Stat. 601; Pub. L. 86–257,
title II, § 201(e), title VII, §§ 704(a)–(c), 705(a),
Sept. 14, 1959, 73 Stat. 525, 542–545; Pub. L. 93–360,
§ 1(c)–(e), July 26, 1974, 88 Stat. 395, 396.)
Editorial Notes
AMENDMENTS
1974—Subsec. (d). Pub. L. 93–360, § 1(c), (d), substituted
‘‘any notice’’ for ‘‘the sixty-day’’ and inserted ‘‘, or
who engages in any strike within the appropriate pe-
riod specified in subsection (g) of this section,’’ in loss-
of-employee-status provision and inserted enumeration
of modifications to this subsection which are to be ap-
plied whenever the collective bargaining involves em-
ployees of a health care institution.
Subsec. (g). Pub. L. 93–360, § 1(e), added subsec. (g).
1959—Subsec. (a)(3). Pub. L. 86–257, § 201(e), struck out
‘‘and has at the time the agreement was made or with-
in the preceding twelve months received from the
Board a notice of compliance with sections 159(f), (g),
(h) of this title’’ after ‘‘such agreement when made’’ in
cl. (i).
Subsec. (b)(4). Pub. L. 86–257, § 704(a), among other
changes, substituted ‘‘induce or encourage any indi-
vidual employed by any person engaged in commerce or
in an industry affecting commerce to engage in, a
strike or a refusal in the course of his employment’’ for
‘‘induce or encourage the employees of any employer to
engage in, a strike or a concerted refusal in the course
of their employment’’ in cl. (i), added cl. (ii), and in-
serted provisions relating to agreements prohibited by
subsection (e) of this section in cl. (A), the proviso re-
lating to primary strikes and primary picketing in cl.
(B), and the last proviso relating to publicity.
Subsec. (b)(7). Pub. L. 86–257, § 704(c), added par. (7).
Subsec. (e). Pub. L. 86–257, § 704(b), added subsec. (e).
Subsec. (f). Pub. L. 86–257, § 705(a), added subsec. (f).
1951—Subsec. (a)(3). Act Oct. 22, 1951, substituted
‘‘and has at the time the agreement was made or with-
in the preceding twelve months received from the
Board a notice of compliance with section 159(f), (g), (h)
of this title, and (ii) unless following an election held
as provided in section 159(e) of this title within one
year preceding the effective date of such agreement,
the Board shall have certified that at least a majority
of the employees eligible to vote in such election have
voted to rescind the authority of such labor organiza-
tion to make such an agreement:’’ for ‘‘; and (ii) if, fol-
lowing the most recent election held as provided in sec-
tion 159(e) of this title the Board shall have certified
that at least a majority of the employees eligible to
vote in such election have voted to authorize such
labor organization to make such an agreement:’’.
1947—Act June 23, 1947, amended section generally by
stating what were unfair labor practices by a union as
well as by an employer, and by inserting provisions
protecting the right of free speech for both employers
and unions.
Statutory Notes and Related Subsidiaries
EFFECTIVE DATE OF 1974 AMENDMENT
Amendment by Pub. L. 93–360 effective on thirtieth
day after July 26, 1974, see section 4 of Pub. L. 93–360,
set out as an Effective Date note under section 169 of
this title.
EFFECTIVE DATE OF 1959 AMENDMENT
Amendment by sections 704(a)–(c) and 705(a) of Pub.
L. 86–257 effective sixty days after Sept. 14, 1959, see
section 707 of Pub. L. 86–257, set out as a note under sec-
tion 153 of this title.
EFFECTIVE DATE OF 1947 AMENDMENT
For effective date of amendment by act June 23, 1947,
see section 104 of act June 23, 1947, set out as a note
under section 151 of this title.
AGREEMENTS REQUIRING MEMBERSHIP IN A LABOR
ORGANIZATION AS A CONDITION OF EMPLOYMENT
Section 705(b) of Pub. L. 86–257 provided that: ‘‘Noth-
ing contained in the amendment made by subsection
(a) [amending this section] shall be construed as au-
thorizing the execution or application of agreements
requiring membership in a labor organization as a con-
dition of employment in any State or Territory in
which such execution or application is prohibited by
State or Territorial Law.’’
UNFAIR LABOR PRACTICES PRIOR TO JUNE 23, 1947
Act June 23, 1947, ch. 120, title I, § 102, 61 Stat. 152,
provided that: ‘‘No provision of this title [amending
this subchapter] shall be deemed to make an unfair
labor practice any act which was performed prior to the
date of the enactment of this act [June 23, 1947] which
did not constitute an unfair labor practice prior there-
to, and the provisions of section 8(a)(3) and section
8(b)(2) of the National Labor Relations Act as amended
by this title [subsecs. (a)(3) and (b)(2) of this section]
shall not make an unfair labor practice the perform-
ance of any obligation under a collective-bargaining
agreement entered into prior to the date of the enact-
ment of this Act [June 23, 1947], or (in the case of an
agreement for a period of not more than one year) en-
tered into on or after such date of enactment, but prior
to the effective date of this title, if the performance of
such obligation would not have constituted an unfair
labor practice under section 8(3) [see subsec. (a)(3) of
this section] of the National Labor Relations Act prior
to the effective date of this title [sixty days after June
23, 1947] unless such agreement was renewed or ex-
tended subsequent thereto.’’
§ 158a. Providing facilities for operations of Fed-
eral Credit Unions
Provision by an employer of facilities for the
operations of a Federal Credit Union on the
premises of such employer shall not be deemed
to be intimidation, coercion, interference, re-
straint or discrimination within the provisions
of sections 157 and 158 of this title, or acts
amendatory thereof.
(Dec. 6, 1937, ch. 3, § 5, 51 Stat. 5.)
Editorial Notes
CODIFICATION
This section was not enacted either as part of the
Labor Management Relations Act, 1947, which com-
prises this chapter, or as part of the National Labor Re-
lations Act, which comprises this subchapter.
§ 159. Representatives and elections
(a) Exclusive representatives; employees’ adjust-
ment of grievances directly with employer
Representatives designated or selected for the
purposes of collective bargaining by the major-
ity of the employees in a unit appropriate for
such purposes, shall be the exclusive representa-
tives of all the employees in such unit for the
purposes of collective bargaining in respect to
rates of pay, wages, hours of employment, or
other conditions of employment: Provided, That
any individual employee or a group of employees
Cross-references
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Federal law — U.S. Code and appendices · legal_authorities
**(a) Unfair labor practices by employer** It shall be an unfair labor practice for an employer—
(1) to interfere with, restrain, or coerce employees in the exercise of the rights guaranteed in [section 157 of this title](https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section157&num=0&edition=prelim);
(2) to dominate or interfere with the formation or administration of any labor organization or contribute financial or other support to it: Provided, That subject to rules and regulations made and published by the Board pursuant to [section 156 of this title](https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section156&num=0&edition=prelim), an employer shall not be prohibited from permitting employees to confer with him during working hours without loss of time or pay;
(3) by discrimination in regard to hire or tenure of employment or any term or condition of employment to encourage or discourage membership in any labor organization: Provided, That nothing in this subchapter, or in any other statute of the United States, shall preclude an employer from making an agreement with a labor organization (not established, maintained, or assisted by any action defined in this subsection as an unfair labor practice) to require as a condition of employment membership therein on or after the thirtieth day following the beginning of such employment or the effective date of such agreement, whichever is the later, (i) if such labor organization is the representative of the employees as provided in [section 159(a) of this title](https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section159/a&num=0&edition=prelim), in the appropriate collective-bargaining unit covered by such agreement when made, and (ii) unless following an e
Source: Supplied U.S. Code snapshot — release unconfirmed · 29 U.S.C. § 158
Stored review status: release_metadata_unconfirmed. Same stored citation; legal effect and authority still require review.