*511OPINION

These cases, consolidated for purposes of this opinion, all arise from similar disputes over the manner in which the Labor Commissioner of the State of Nevada (Commissioner)1 has *512determined the “prevailing wage rate,” or minimum wage which public bodies of this state are required to pay in contracts for public works projects, pursuant to NRS 338.020(1).2 The respondents are “public bodies” subject to this statute, NRS 338.010(2),3 and the Commissioner is charged with the statutory duty of enforcing this requirement. NRS 338.015(1).4

The gist of respondents’ complaint against the Commissioner is that in establishing the “prevailing wage rate,” the Commissioner has made no effort to determine the actual wage rates in their separate localities, but rather has merged all counties and cities in the state into two districts, northern and southern, and then effectively established the wage rate paid by urban contractors in Reno and Las Vegas who have signed collective bargaining agreements as the prevailing wage rates for those entire portions of the state.5 Respondents include a school district, a city and two counties which are not in these metropolitan areas, and which contend that the actual prevailing wages in their localities are significantly lower than those determined by the Commissioner. They claim that despite their presentation of substantial evidence of such discrepancies to the Commissioner, whether in the form of surveys of local contractors, surveys of contractors bidding in their localities, statistics from surveys of the Nevada Employment Security Department, or actual bids submitted in alternative form,6 the *513Commissioner refused to alter his determination of the prevailing wage rates in their localities or conduct public hearings regarding such rates, in violation of NRS 338.030(2).7

Respondents claim that as a result of the Commissioner’s determinations their taxpayers are paying, or will pay, tens of thousands of dollars for artificially high labor costs in their public works projects. They have requested that prevailing wage rates for their particular localities be set by the Commissioner, and that hearings be held for that purpose, or that the Commissioner be enjoined from enforcing the rates derived from Reno and Las Vegas agreements in their localities.

The Commissioner, on the other hand, has refused to establish prevailing wage rates for such particular localities, contending that he is authorized by statute to set such rates for a “district” of his own designation. He further has contended that he is not obligated to conduct a hearing unless he is “in doubt” regarding a prevailing wage rate, and that he has never had such doubt.8

*514In the three cases presented on this appeal, the district courts each ruled in favor of the respondents and against the position of the Commissioner, characterizing his actions as arbitrary and capricious, or in violation of the statute. As a result, the Commissioner has been enjoined from enforcing against respondents the prevailing wage rate as set by his office in accordance with rates paid in two large “districts,” rather than by local political subdivision, and upon evidence developed at public hearings in such localities. In Case No. 14804, the district judge declared null and void that portion of NRS 338.030(2) which limits the hearing requirement to circumstances in which the Commissioner is “in doubt.”

The Commissioner has appealed the judgments, raising various procedural and substantial objections to the injunctions. We address the merits of his contentions as to the proper statutory authority of the Commissioner below. The Commissioner’s objections to the form of the injunctions on the ground of lack of specificity do not merit discussion beyond the brief observation that we can see no justification for a remand for a clarification of the obvious. Withrow v. Larkin, 421 U.S. 35, 45-46 (1975). Appellant’s other contentions, including the argument that no irreparable harm would result to the plaintiffs, in the face of their specific evidence of the substantial additional cost of on-going and imminent public works projects, which concededly would not be recoverable by the taxpayers should the Commissioner’s rate be enforced, are similarly without merit.

In essence, the respondents below contended, and the district courts agreed, that the Labor Commissioner had exceeded his statutory authority by determing that a “district,” for purposes of determining “prevailing wage rates” pursuant to NRS *515Chapter 338, might be composed of numerous counties, not division of the entire state into two “districts,” is in excess of his statutory authority.

conforming to the boundaries of a public body or any recognized political subdivision. We agree that the Commissioner’s The Commissioner has predicated his claim primarily upon the language of NRS 338.020(1), which provides that the rate of wages paid by a public body in a contract for public work “must be not less than the rate of such wages then prevailing in the county, city, town or district in this state in which the public work is located.” (Emphasis added.) We cannot join the Commissioner in reading the term so broadly.

The definition of the term “district” as “a territorial division (as of a nation, state, county or city) marked off or defined for administrative . . . purposes,” Webster’s Third New International Dictionary 660 (1976), denotes specific political or administrative boundary lines. The term was added to the predecessor of NRS 338.020(1) in 1941, at the same time that the Legislature added a new provision defining a “public body” subject to the act as “the state, county, city, town, village, school district or any public agency of this state or its political subdivisions.” 1941 Nev.Stat. ch. 139, secs. 2 and 3, at 390.

We find nothing in the statute which authorizes the Commissioner to create amorphous “districts,” covering vast geographic areas and including disparate communities stretching far beyond the boundaries of any “locality in which the public work is to be performed,” as the unit within which the prevailing wage is to be established. As was said by the Supreme Court of New Mexico of a similar practice:

The law does not give the defendant the power to set a minimum scale of what he thinks they should be, but only to determine the prevailing wages being paid in a municipality or political subdivision, and set them out in his order as the minimum wage to be paid. Here he made one order covering the entire state, thus finding the same wage scale prevailing in the severely depressed and boom counties, which in itself, is sufficient to cast serious doubt on the bona fides of his action.

City of Albuquerque v. Burrell, 326 P.2d 1088, 1091 (1958). In this case, as well, respondents were entitled to a determination of the prevailing wage rates within their own boundaries. Appellant acted arbitrarily and capriciously, and in excess of his statutory authority, in making prevailing wage rate determinations on the basis of “northern” and “southern” districts, rather than for the local political subdivisions awarding public works contracts.

*516Furthermore, we conclude that the refusal of the Commissioner to conduct hearings in these localities in accordance with the provisions of the statute was arbitrary and capricious. Respondents individually and collectively presented the Commissioner’s office with evidence in support of their contentions that the wage rates established by his office did not accurately reflect the prevailing wage rates as actually paid in their communities, including their own wage surveys, the surveys of an independent state agency, and actual bids upon public works projects. In the face of such evidence, we hold that the assertion by the Commissioner that he was not “in doubt” as to the prevailing wage rates in these localities insufficient to deny the respondents the hearings to which they were entitled under the statute.

NRS 338.030(2) provides that “[w]hen the labor commissioner is in doubt as to the general prevailing rate of per diem wage he shall hold a hearing in the locality in which the work is to be executed.” (Emphasis added.) The provision specifies the notice that must be given, and requires that organizations affiliated with state or national labor organizations, as well as the contractors of the locality or their representatives be heard. The statute further mandates that “[f]rom the evidence presented the labor commissioner shall determine the general prevailing rate of per diem wage.” (Emphasis added.) The clear import of these statutory commands may not be avoided by the claim of the Commissioner that he subjectively lacks “doubt,” regardless of the state of the evidence or objections presented to him and regardless of the inadequacy of his own prior investigations.

Under a similar statutory scheme, the commission charged with administration of a prevailing wage rate statute in Missouri had made an initial determination, similar to that made by the Commissioner here, based upon collective bargaining agreements of wide geographic application. City of Kennett v. Labor & Indus. Rel. Com’n, 610 S.W. 2d 623 (Mo. 1981). Upon due notice of objection by the City of Kennett that the preliminary determination did not reflect the prevailing wage in that city, however, the Commission undertook its own survey of wages in the locality, and scheduled a hearing at which both the Commission and the City presented their evidence. Under these circumstances, the Supreme Court of Missouri rejected the city’s challenge to the Commission’s determination. “It cannot be said that the Commission failed to consider wages paid generally in the county including wages paid on private construction projects, or that the Commission’s decision was unsupported by substantial and competent evidence.” Id. at 627.

*517The procedure employed by the Commissioner in this case stands in marked contrast to that approved by the Missouri court. Despite efforts to develop information on their own, respondents were not granted the opportunity to participate in hearings. Nor did the Commissioner make any effort to establish an evidentiary record in support of his determination of the prevailing rate in each locality, as required by the statute.

We hold that when interested parties have duly submitted objections to the prevailing wage rate as preliminarily determined by the Commissioner, and have accompanied such objections with independent evidence corroborating the assertion that there is a discrepancy between the established wage rate and the actual wage rate prevailing in the relevant local political entity or subdivision, the Commissioner is required, under the terms of NRS 338.030, to conduct a hearing as set forth in the statute, and to base his final determination upon the evidence presented at such hearing. We further note that the provisions of the Nevada Administrative Procedure Act governing a “contested case” apply to hearings so required. NRS 233B.032.9 The Commissioner’s failure in these cases to accept relevant evidence and to accord interested parties affected by his action a reasonable opportunity to be heard renders his action invalid as based upon unlawful procedure, Checker Cab v. State, Taxicab Authority, 97 Nev. 5, 621 P.2d 496 (1981), as well as invalid as in excess of his statutory authority. NRS 233B.140(5)(b) and (c).

Accordingly, we affirm the judgments below insofar as they enjoined the Commissioner from enforcing provisions of the prevailing wage law with regard to contracts of the respondents, until hearings are conducted in accordance with the mandate of the statute, and prevailing wage rates are established by the Commissioner for each relevant locality, on the basis of the evidence presented at such hearings. In light of our interpretation of the statute, we reverse the portion of the judgment in Case No. 14804, which declared the “in doubt” provision of NRS 338.030(1) to be null and void.