This appeal comes to this Court on petition from the Sara Lee Bakery Group, Inc. and its wholly owned subsidiary, the Ear-thgrains Company (“the Company”) seeking review of an order of the National Labor Relations Board (“the Board”) issued against the Company. The Board has also filed a cross-application, seeking enforcement of its order. We grant the Company’s petition for review, and enforce the Board’s order in part and deny in part.
I. FACTUAL AND PROCEDURAL BACKGROUND
The Sara Lee Bakery Group, Inc. operates approximately fifty bakeries across the United States, including one located in Owensboro, Kentucky, belonging to its wholly owned subsidiary, The Earthgrains Company. 1 At all times relevant for this appeal, the Owensboro bakery used two types of drivers to deliver its product: route sales drivers (who drove baked goods to retail establishments) or transport drivers (who drove tractor-trailer trucks and transported baked goods to other bakeries and depots owned by Sara Lee). Chauffeurs, Teamsters, and Helpers Local Union No. 215 (“the Union”) has served as the collective-bargaining representative for both the route sales and transport drivers; Larry Murray was the Union’s business agent responsible for contract enforcement at the facility while Billy Ballard was the drivers’ steward. The Union negotiated a collective bargaining agreement (“CBA”) that was in effect from May 10, 2005 to May 10, 2007 which provided, inter alia, a grievance procedure culminating in arbitration.
Sara Lee also operates a bakery in London, Kentucky, approximately 220 miles southeast of Owensboro. The transport drivers at the London bakery are employed by an unaffiliated delivery-services company, Worldwide Logistics (“Worldwide”). The Worldwide drivers are not members of the Owensboro bargaining unit and are not represented by the Union in this case.
In 2002, the General Manager of the London bakery, William Baird, 2 imple *426 mented a cross-docking system for the Owensboro and London bakeries to deliver products to each other. Under this system, transport drivers from London and Owensboro would meet at the Louisville, Kentucky depot, unhook and trade their trailers, and then return to their respective bakeries with the necessary inter-bakery product. Cross-docking served as a felicitous means of streamlining the delivery process; it was also convenient because at the time the system was implemented, both bakeries were already servicing the Louisville depot. Before the cross-docking system was implemented, the exclusive method for delivering product between London and Owensboro was via a transport driver who originated in London: the transport driver would deliver Owensboro-bound product by making a direct run from London to Owensboro. On the return trip, the driver would “backhaul” London-bound products to the London bakery. It is undisputed that the Owensboro transport drivers have never directly delivered product to the London bakery.
While there was a period in 2002 where there was no truck making the direct London-Owensboro run, eventually scheduling problems and market changes required re-institution of direct runs between the two bakeries. Specifically, the Company introduced a new cottage loaf bread product that was only baked in London, and as a result five days a week a London transport driver needed to make a run to Owens-boro. Additionally, there were occasions when the Owensboro bakery would not meet the output requirement by the time the transport driver had to leave to cross-dock at Louisville. In those situations, London drivers would backhaul the product to the London bakery. The amount of backhauling increased substantially during the summer of 2005, when the Company introduced another new product, wholegrain white bread, that was only baked at Owensboro and had to be delivered to the London bakery.
Throughout this time, Murray, Ballard, and other Union officials complained to the Company about its backhauling practice. Finally, on July 28, 2005, the Union filed a grievance on the matter. The grievance cited an incident that had happened a few days earlier when a Worldwide driver acci-dently drove a trailer from Owensboro to London that was supposed to have been driven by an Owensboro transport driver to Louisville. That incident violated specific provisions of the CBA. On August 18, 2005, the parties met to discuss the grievance and the Company’s backhauling policy more generally. Baird informed Murray and Ballard that the direct London to Owensboro run would end soon, thus significantly limiting the amount of backhauling that would occur; the Company also stated that it, nevertheless, had the right to backhaul products under the terms of the CBA.
Despite this meeting, the Union continued to have concerns about backhauling, and accordingly filed another grievance on September 20, 2005. The parties met again on October 11, 2005, and Baird explained that the practice of backhauling was being curtailed and would end completely once the Owensboro bakery gained certification to produce additional products. At this meeting, Murray presented Baird with a written request for information regarding Worldwide, based on the *427 Union’s belief that the Company had misled it about the extent of its backhauling practice. Murray requested that the Company provide the following information:
1. The name, address, and phone number of the subcontracting company [Worldwide] [Paragraph One];
2. The number of baskets hauled in 2005 to date by that entity, stating the date and amount hauled for each date [Paragraph Two];
3. The price paid to the [entity] for the loads and the total amount paid to date [Paragraph Three];
4. The total miles to date driven by each driver performing subcontracting work, for each day performed [Paragraph Four];
5. Copies of any letters of agreement, e-mails, contracts, or anything else reflecting the agreement between the company and the subcontractor [Paragraph Five].
The letter also stated that Baird should “further consider this our demand to bargain on this new round of subcontracting work.”
After this meeting, Murray wrote a letter to the Company advising it that the Union was advancing its grievance to arbitration. The Company responded to the Union’s information request six weeks later on November 22, 2005. In its response, the Company denied that the Union had lost any work due to the back-hauling, highlighting that the Company had actually hired an additional Owens-boro transport driver during the relevant period. The Company also declined to provide the requested information. On November 28, 2005, the Union filed an unfair labor practice charge with the Board alleging, inter alia, that the Company violated Sections 8(a)(5) and (1) of the National Labor Relations Act (“the Act”), 3 29 U.S.C. §§ 158(a)(5) & (1), by failing to provide information sought by the Union. In response, the Company argued that the information sought by the Union is irrelevant to the grievances, and that the Company did not have records which specified the amount of product moved from the Owensboro plant via backhaul by London trucks. 4
On February 14, 2006, the Company supplemented its response to the Union’s request for information. In this response, the Company provided the information requested in paragraph one of the Union’s original request, but refused to provide any other information. The Company disputed the Union’s categorization of the backhauling practice as “subcontracting,” and maintained that the act of backhauling, which had been a longstanding prac *428 tice, did not violate the CBA. Further, the Company explained that it could not provide the requested mileage data since it does not keep that information. 5 The Company also stated that the Union’s request for cost and contract information had no bearing on any legitimate Union interest.
Two weeks later, the Regional Director of the Board filed a complaint and a notice of hearing, alleging that the Company had unreasonably delayed its response to the information requested in paragraph one, and that the Company had unlawfully refused to provide the other information sought by the Union. In its answer, the Company denied the material allegations and asserted the defenses of confidentiality and waiver by the Union. The administrative law judge (“ALJ”) rejected the Company’s defenses, and concluded that the Company had violated Sections 8(a)(5) and (1) of the Act because it failed to provide relevant information requested by the Union, and it unreasonably delayed providing other relevant information requested by the Union. The ALJ ordered the Company to cease and desist from refusing to bargain collectively with the Union, and ordered it to provide the Union with the information that was requested in paragraphs two, three, four, and five. The Company was also ordered to make a reasonable effort to secure any unavailable information, and if such information remained unavailable, it was required to explain and document the reasons for its unavailability. 6 The Company filed exceptions to the judge’s decision, but a three member panel of the Board affirmed the ALJ’s rulings, findings, and conclusions, and adopted the recommended order. The Company filed a petition for review before this Court on March 1, 2007; the Board filed a cross-application for enforcement of its order on March 27, 2007.
II. STANDARD OF REVIEW
We review the Board’s factual findings under a substantial evidence standard.
Selkirk Metalbestos, North Am., Eljer Mfg., Inc. v. NLRB,
*429 III. DISCUSSION
A. Uncontested Findings
The Board first contends that before this Court, the Company has only contested the following portions of the its order: that it produce the number of baskets backhauled by Worldwide drivers (paragraph two), that the Company produce its contract with Worldwide (paragraph five), and that it produce the costs associated with that contract (paragraph three). Therefore, the Board seeks summary enforcement of the two findings that the Company has not challenged on appeal: that the Company unreasonably delayed providing Worldwide’s contact information (paragraph one), and that it must produce the total number of miles driven by Worldwide drivers (paragraph four).
Case law has established that when an employer does not challenge a finding of the Board, the unchallenged issue is waived on appeal, entitling the Board to summary enforcement.
See NLRB v. Brookshire Grocery Co.,
B. Unavailable Information
The Board next argues that the Company failed to show that information relating to the number of baskets hauled in 2005 by Worldwide drivers (paragraph two) is unavailable. It argues that the Company only engaged in a cursory search for the information, and it did not conduct a reasonable inquiry to determine whether the information is available from other, obvious sources, such as its parent company, its sister bakeries, or Worldwide itself. In response, the Company argues that it cannot be held liable for violating Sections 8(a)(5) and (1) of the Act for failing to provide information it does not have. It explains that it does not keep records reflecting the data the Union sought in paragraph two, and even though that data could be extrapolated from its Load and Transport Sheets, it destroys those documents after seven days.
Case law has consistently held that an employer cannot be held liable under the Act for failing to produce information it does not have.
See Vanguard Fire & Supply Co., Inc.,
345 N.L.R.B. No. 77, *42-43 (2005),
enforced,
*430 After reviewing the record, we find the Company’s arguments unavailing. Even though it is unquestionable that the Company did not keep records about the amount of product that was backhauled from Owensboro by Worldwide drivers, we agree with the ALJ’s finding that the Company “utterly failed to conduct a good faith inquiry” to determine whether the information was available from any other sources. While the Company responded that such attempts would be “futile,” it does not seem implausible that some other source, particularly Worldwide, may in fact have some information that could provide insight on how much product was back-hauled from Owensboro to London. It may very well be that such information simply no longer exists, but the Company is required to show that it could not obtain the requested information from other sources.
C. Contract and Cost Information
Finally, the Board contends that substantial evidence supports its decision that the Company is obligated under the Act to turn over the remaining information requested by the Union, specifically its contract with Worldwide (paragraph five) and the costs associated with that contract (paragraph three). Without that information, the Board argues, the Union is unable to effectively police the CBA, decide whether to pursue and arbitrate potential grievances, and decide whether to bargain over subcontracting work. The Company asserts that not only did the Union fail to articulate a purpose for why it was seeking this information, but also that the Board erroneously concluded that the Company’s contracting cost and contract with Worldwide is relevant to the underlying dispute. According to the Company, the underlying grievance it has with the Union involves whether the practice of backhauling violates the CBA, and the Company’s contracting cost and contract with Worldwide are irrelevant to that ultimate determination.
Section 8(a)(5) of the Act makes it an unfair labor practice for an employer “to refuse to bargain collectively with the representatives of his employees 29 U.S.C. § 158(a)(5). An employer is obligated to furnish, upon request, information that is relevant and necessary to the Union’s performance of its duties as the employees’ bargaining representative, including information concerning contract administration, negotiations, and grievance processing.
NLRB v. Acme Indus. Co.,
Case law also explains that in order for a union to prove that an employer has violated Sections 8(a)(5) and (1) the union is required to make two showings before the ALJ. First, the union must show, at the time of the information request, that it articulated a legitimate purpose for seeking the information.
S&W Motor Lines, Inc. v. NLRB,
First, the Union failed, at the time it made its information request, to articulate a purpose for seeking the company’s contracting costs and contract with Worldwide. Since the information being requested is not bargaining unit data, the Union’s failure to articulate nothing more than a “bare assertion” of relevancy falls short.
See Detroit Edison Co.,
Second, the Board never demonstrated how the Company’s contracting costs and contract with Worldwide are logically connected to any legitimate union purpose. A union may legitimately request information if the information is necessary to either (1) negotiate a new CBA or (2) to administer/police an existing CBA.
General Electric Co. v. NLRB,
Further, we acknowledge the “generally-recognized rule” that contracting costs are only relevant if the union can show that the employer justified its contracting to the Union on the basis of cost.
See Western Mass.,
We agree with the Company that this case is similar to the factual situation presented to the Board in
Connecticut Yankee.
IV. CONCLUSION
For the foregoing reasons, the Company’s petition for review is granted. The Board is entitled to summary enforcement of its findings regarding paragraphs one and four, and we hold that there is substantial evidence to support the Board’s findings regarding paragraph two; accordingly the Board’s order is enforced in part. However, since the information requested in paragraphs three and five is not relevant to the underlying labor dispute, we *433 deny enforcement of the Board’s order in part.
Notes
. Even though these appeals involves actions that took place exclusively in Kentucky, we have jurisdiction in this case because the Company transacts business in this circuit.
. During the period of time relevant for this *426 case, Baird’s position at the Company shifted. In 2002 and 2003, Baird was the general manager at the London bakery, but for a period in 2003 and 2004, he served as the manager for both the Owensboro and London bakeries. In the fall of 2004, he assumed the position of plant manager at Owensboro.
. Under Section 8(a)(5) of the Act, an employer’s "refusal to bargain collectively with the representatives of his employees” constitutes an “unfair labor practice.” 29 U.S.C. § 158(a)(5). Under Section 8(a)(1) of the Act, an employer also commits an "unfair labor practice” when it "interfere[s] with, restrain[s], or coerce[s] employees in the exercise of their [collective bargaining] rights.” The Supreme Court has written that an employer who violates Section 8(a)(5) also commits a "derivative” violation of Section 8(a)(1).
See Metropolitan Edison Co. v. Board,
. The Company uses "Load Sheets” (a computer generated document which reflects the types and quantities of product to be sent from a bakery to a destination on a given day) and "Transport Sheets” (a handwritten sheet that reflects the types and quantities of product on each truck) to keep track of the product that is delivered by the transport drivers. Not only do neither of those documents specify what amount of product was backhauled by a London driver on a particular day, but also the Company only keeps the Load and Transport Sheets for seven days before they are discarded.
. The Company did write in the letter that “from at least March 2002 through September 2005, on an average of approximately three times per week, a truck emanating from London would backhaul less than approximately half a load of product from Owens-boro to London.”
. The ALJ also ordered the Company to provide the Board's Regional Director with sworn certification setting forth the Company's efforts to retrieve the Union’s requested information from the Company’s computerized and electronic databases as well as the Company’s efforts to obtain information from its parent company, appropriate subsidiaries, and from its contracting partner, Worldwide. Finally, the order required the Company to post a remedial notice.
. Baird did testify that he had conversations with the London manager about the use of backhauling that did involve discussions regarding cost effectiveness, but he explained that the Union was not privy to those conversations.
