Martin v. Occupational Safety & Health Review CommissionMartin v. Occupational Safety & Health Review Commission
delivered the opinion of the Court.
In this сase, we consider the question to whom should a reviewing court defer when the Secretary of Labor and the Occupational Safety and Health Review Commission furnish reasonable but conflicting interpretations of an ambiguous regulation promulgated by the Secretary under the Occupational Safety and Health Act of 1970, 84 Stat. 1590, as amended,
I — I
<J
Thе Occupational Safety and Health Act of 1970 (OSH Act or Act) establishes a comprehensive regulatory scheme designed “to assure so far as possible . . . safe and healthful working conditions” for “every working man and woman in the Nation.”
The Act charges the Secretary with responsibility for setting and enforcing workplace health and safety standards. See
Cuyahoga Valley R. Co.
v.
United Transportation Union,
The Commission is assigned to “carr[y] out adjudicatory functions” under the Act.
B
This case arises
from the
Secretary’s effort to enforce compliance with OSH Act standards relating to coke-oven emissions. Promulgated pursuant to the Secretary’s rulemaking powers, these standards establish maximum permissible emissions levels and require the use of employee respirators in certain circumstances. See
The ALJ sided with the Secrеtary, but the full Commission subsequently granted review and vacated the citation. See
CF&I,
12 OSHC 2067 (1986). In the Commission’s view, the “respiratory protection program” referred to in
The Secretary petitioned for review in the Court of Appeals for the Tenth Circuit, which affirmed the Commission’s order. See
Dole
v.
Occupational Safety and Health Review Commission,
The Secretary thereafter petitioned this Court for a writ of certiorari. We granted the petition in order to resolve a conflict among the Circuits on the question whether a reviewing court should defer to the Secretary or to the Commission when these actors furnish reasonable but conflicting interpretations of an ambiguous regulation under the OSH Act.
4
I — I l — l
It is wеll established “that an agency s construction of its own regulations is entitled to substantial deference.”
Lyng
v.
Payne,
To put this question in perspective, it is necessary to take account of the unusual regulatory structure established by the Act. Under most regulatory schemes, rulemaking, enforcement, and adjudicative powers are combined in a single administrative authority. See,
e. g.,
Although the Act does not expressly address the issue, we now infer from the structure and history of the statute, see
id.,
at 6-7, that the power to render authoritative interpretatiоns of OSH Act regulations is a “necessary adjunct” of the Secretary’s powers to promulgate and to enforce national health and safety standards. The Secretary enjoys readily identifiable structural advantages over the Commission in rendering authoritative interpretations of OSH Act regulations. Because the Secretary promulgates these standards, the Secretary is in a better position than is the Commission to reconstruct the purposе of the regulations in question. Moreover, by virtue of the Secretary’s statutory role as enforcer, the Secretary comes into contact with a much greater number of regulatory problems than does the Commission, which encounters only those regulatory episodes resulting in contested citations. Cf. Note, Employee Participation in Occupational Safety and Health Review Commission Proceedings, 85 Colum. L. Rev. 1317, 1331, and n. 90 (1985) (reporting small percеntage of OSH Act citations contested between 1979 and 1985). Consequently, the Secretary is more likely to develop the expertise relevant to assessing the ef-
The legislative history of the OSH Act supports this conclusion. The version of the Act originally passed by the House of Representatives vested adjudicatory power in the Commission and rulemaking power in an independent standards board, leaving the Secretary with only enforcement power. 116 Cong. Rеc. 38716 (1970), reprinted in Legislative History of the Occupational Safety and Health Act of 1970 (S. 2193, Pub. L. 91-596) (Committee Print prepared by the Subcommittee on Labor of the Senate Committee on Labor and Public Welfare), pp. 1094-1096 (1971) (Legislative History). The Senate version dispensed with the standards board and established the division of responsibilities that survives in the enacted legislation. The Senate Committee Report explained that combining legislative and enforcement рowers in the Secretary would result in “a sounder program” because it would make a single administrative actor responsible both for “formulating] rules . . . and for seeing that they are workable and effective in their day-to-day application,” and would allow Congress to hold a single administrative actor politically “accountable for the overall implementation of that program.” S. Rep. No. 91-1282, p. 8 (1970), reprinted in Legislative History 148. Because dividing the рower to promulgate and enforce OSH Act standards from the power to make law by interpreting them would make
two
administrative actors ultimately responsible for implement
For the same reason, we reject the Court of Appeals’ inference that Congress intended “to endow the Commission with the normal complement of adjudicative powers possеssed by
traditional
administrative agencies.”
Consequently, we think the more plausible inference is that Congress intended to delegate to the Commission the type of nonpolicymaking adjudicatory powers typically exercised by a
court
in the agency-review context. Under this conception of adjudication, the Commission is authorized to review the Secretary’s interpretations only for consistency
CF&I draws a different conclusion from the history and structure of the Act. Congress, CF&I notes, established the Commission in response to concerns that combining, rulemaking, enforcement, and adjudicatory power in the Secretary would leave employers unprotected from regulatory bias. Construing the Act to separate enforcement and interpretive powers is consistent with this purpose, CF&I argues, because it protects regulated employers from biased prosecutorial interpretations of the Secretary’s regulations. Indeed, interpretations furnished in the course of administrative penalty actions, according to CF&I, are mere “litigating positions,” undeserving of judicial deference under our precedents. See,
e. g., Bowen
v.
Georgetown Univ. Hospital,
Although we find these concerns to be important, we think that they are overstated. It is clear that Congress adopted the split-enforcement structure in the OSH Act in order to achieve a greater separation of functions than exists in a conventional unitary agency. See S. Rep. No. 91-1282,
supra,
at 56, reprinted in Legislative History 195 (individual views of Sen. Javits) (noting that adjudication by independent panel goes beyond division of functions under the APA but defending split-enforcement structure as “morе closely [in] accor[d] with traditional notions of due process”). But the conclusion that the Act should therefore be understood to separate enforcement powers from authoritative interpretive powers
We harbor no doubt that Congress also intended to protect regulated parties from biased interpretations of the Seсretary’s regulations. But this objective is achieved when the Commission, and ultimately the court of appeals, review the Secretary’s interpretation to assure that it is consistent with the regulatory language and is otherwise reasonable. Giving the Commission the power to substitute its reasonable interpretations for the Secretary’s might slightly increase regulated parties’ protection from overzealous interpretations. But it would also clearly frustrate Congress’ intent to make a single administrative actоr “accountable for the overall implementation” of the Act’s policy objectives by combining legislative and enforcement powers in the Secretary. S. Rep. No. 91-1282, p. 8, reprinted in Legislative History 148.
We are likewise unpersuaded by the contention that the Secretary’s interpretations of regulations will necessarily appear in forms undeserving of judicial deference. Our decisions indicate that agency “litigating positions” are not entitled to deference when they are merely appellate counsel’s
“post hoc
rationalizations” for agency action, advanced for the first time in the reviewing court. See
Bowen
v.
Georgetown Univ. Hospital, supra,
at 212;
Burlington Truck Lines, Inc.
v.
United States,
In addition, the Secretary regularly employs less formal means of interpreting regulаtions prior to issuing a citation. These include the promulgation of interpretive rules, see,
e. g., Marshall
v.
W and W Steel Co.,
III
We emphasize the narrowness of our holding. We deal in this case only with the division of powers between the Sеcretary and the Commission under the OSH Act. We conclude from the available indicia of legislative intent that Congress
In addition, although we hold that a reviewing court may not prefer the reasonable interpretations of the Commission to the reasonable interpretations of the Secretary, we emphasize that the reviewing court should defer to the Secretary only if the Secretary’s interpretation is reasonable. The Secretary’s interpretation of an ambiguous regulation is subject to the same standard of substantive review as any other exercise of delegated lawmaking power. See
The judgment of the Court of Appeals is reversed, and the case is remanded for further proceedings consistent with this opinion.
It is so ordered.
Notes
The Secretary has delegated certain statutory responsibilities to the Assistant Secretary for Occupational Safety and Health, who heads the Occupational Safety and Health Administration. See Secretary of Labor’s Order No. 12-71, 36 Fed. Reg. 8754 (1971); Order No. 8-76, 41 Fed. Reg. 25059 (1976); Order No. 9-83, 48 Fed. Reg. 35736 (1983).
“For safe use of any respirator, it is essential that the user be properly instructed in its selection, use, and maintenance. Both supervisors and workers shall be so instructed by competent persons. Training shall provide the men an opportunity to handle the respirator, have it fitted properly, test its face-piece-to-face seal, wear it in normal air for a long familiarity period, and, finally, to wear it in a test atmosphere.”
This regulation states in pertinent part:
“Respirator usage,
(i) The employer shаll assure that the respirator issued to the employee exhibits minimum facepiece leakage and that the respirator is fitted properly.”
Compare
Brock
v.
Williams Enterprises of Georgia, Inc.,
The parties do not challenge the Court of Appeals’ conclusion that the regulations at issue in this case are ambiguous. We assume that this conclusion is correct for purposes of our analysis.