Opinion for the court filed by Circuit Judge GARLAND.
Shamrock Foods Company petitions for review of a decision and order of the National Labor Relations Board (NLRB), and the Board cross-applies for enforcement of its order. The Board found that Shamrock violated section 8(a)(1) of the National Labor Relations Act (NLRA), 29 U.S.C. § 158(a)(1), by, among other things, discharging an employee for allegedly committing misconduct in the course of soliciting his co-workers for the union. For the reasons set forth below, we deny Shamrock’s petition for review and grant the Board’s cross-application for enforcement. 1
I
Shamrock is a wholesale distributor and seller of food products that maintains offices nationwide. We are concerned here with activities that took place at Shamrock’s Phoenix, Arizona facility, which employs some 500 warehouse workers and drivers. In April 1998, Teamsters Local Union No. 104 began a campaign to organize the Phoenix employees. In pursuit of that goal, the union filed a petition for a representation election on June 16, 1998. Four months later, the union charged Shamrock with committing unfair labor practices in connection with the organizing campaign. Based on that charge, the NLRB’s General Counsel issued a complaint against Shamrock. The complaint alleged, inter aha, multiple violations of section 8(a)(1), which makes it unlawful for an employer “to interfere with, restrain, or coerce employees in the exercise of’ their rights to join or assist a labor organization. 29 U.S.C. § 158(a)(1); see id. § 157.
After a two-day hearing, an Administrative Law Judge (ALJ) sustained the General Counsel’s complaint in part. With one exception, the Board affirmed.
See Shamrock Foods Co.,
837 N.L.R.B. No. 138,
In the following parts, we examine Shamrock’s challenges to two of the NLRB’s determinations: (1) that Shamrock unlawfully discharged employee Vincent D’Anella; and (2) that it unlawfully interrogated employee David Trujillo. Shamrock’s other challenges to the NLRB’s determinations require no elaboration by this court, and we deny them for the reasons set forth by the Board and its ALJ.
II
We begin our discussion with Shamrock’s discharge of Vincent D’Anella, a widely acknowledged leader of the 1998 unionization effort. At the time of his October 8, 1998, discharge, D’Anella had been working for Shamrock for almost five years and had a spotless record. See Shamrock Foods Co., 337 N.L.R.B. No. 138, at 7 (ALJ Op.). Although Shamrock admits that it discharged D’Anella during the organizing campaign, it maintains that it did so not for his unionization efforts, but because he physically threatened fellow workers Chris Hargenrader and Daniel Brooks in connection with soliciting them for union authorization cards.
The ALJ and the Board analyzed D’Anella’s discharge utilizing the framework approved by the Supreme Court in
NLRB v. Burnup & Sims,
The only remaining question is whether D’Anella did, in fact, threaten the two employees. The evidence that he did rested largely on the testimony of Hargenrader and Brooks. D’Anella, however, denied making the threats; indeed, he testified that he did not even know Brooks and that he had never solicited Brooks’ union card. D’Anella’s testimony on the latter point was corroborated by employee Luigi Baratia, who testified that it was he who solicited Brooks’ card and that D’Anella was not present at the time. In light of this clash of testimonies, “the case turn[ed] primarily on credibility resolutions by the trier of fact as to the various accounts provided concerning the purported threats.” Shamrock Foods Co., 337 N.L.R.B. No. 138, at 8 (ALJ Op.). Based both on the “testimonial demeanor” of the company’s witnesses, and on their behavior subsequent to the allegedly threatening conversations, the ALJ concluded that “the accounts of threats and intimidation attributed to D’Anella by Hargenrader and Brooks lack any credible quality.” Id. at 10. The ALJ thus determined that D’Anella had not engaged in the alleged *1134 misconduct, and, following Burnup & Sims, concluded that Shamrock violated section 8(a)(1) by discharging him.
Shamrock disputes the NLRB’s determination on a number of grounds. First, it argues that the Board’s finding that D’Anella did not threaten his co-workers is unsupported by substantial evidence. That contention cannot be sustained, however, as the Board’s finding was supported by the testimony of both D’Anella and Baratta. Although Hargenrader and Brooks testified to the contrary, the ALJ did not find them credible. And while Shamrock urges us to set that finding aside, “we do not reverse the Board’s adoption of an ALJ’s credibility determinations unless, unlike here, those determinations are ‘hopelessly incredible,’ ‘self-contradictory,’ or ‘patently unsupportable.’ ”
Cadbury Beverages, Inc.,
Second, Shamrock contends that the Board misapplied the
Burnup & Sims
test by refusing to give the company an opportunity to demonstrate that, even if the threats were never made, it had a good faith belief that they were. This argument, however, misapprehends
Burnup & Sims.
As the Supreme Court made clear in that case, the employer’s good faith is simply not relevant if the misconduct did not occur: “Over and again the Board ha[s] ruled that § 8(a)(1) is violated if the employee is discharged for misconduct arising out of a protected activity,
despite the employer’s good faith,
when it is shown that the misconduct never occurred.”
Burnup & Sims,
Th[e] rule seems to us to be in conformity with the policy behind § 8(a)(1). Otherwise the protected activity would lose some of its immunity, since the example of employees who are discharged on false charges would or might have a deterrent effect on other employees. Union activity often engenders strong emotions and gives rise to active rumors. A protected activity acquires a precarious status if innocent employees can be discharged while engaging in it, even though the employer acts in good faith. It is the tendency of those discharges to weaken or destroy the § 8(a)(1) right that is controlling.
Id.
at 23-24,
It is true that there is a burden-shifting element to the
Burnup & Sims
test that involves proof of the employer’s good faith: “If the employer establishes its honest belief [that the discharged employee was guilty of the misconduct], the burden shifts to the General Counsel to show that the misconduct did not occur.”
TCI Cablevision of Montana, Inc. v. NLRB,
Third, Shamrock protests that the ALJ did not, in fact, impose the burden of proof on the General Counsel as required by Burnup & Sims. There is no question, however, that the ALJ properly assigned the burden. Indeed, his opinion states both that “the General Counsel has the burden of showing that the employee did not, in fact, commit the misconduct,” Shamrock Foods Co., 337 N.L.R.B. No. 138, at 10, and that the “General Counsel has sustained his burden of proving that Respondent violated Section 8(a)(1) by suspending and discharging D’Anella,” id. 4 Shamrock complains that, despite what he said, the ALJ effectively shifted the burden of proof to the company by basing his decision on his disbelief of the company’s witnesses, rather than on affirmative evidence that the alleged misconduct did not occur. But whether or not disbelief in the testimony of one party’s witnesses can be sufficient to satisfy the opposing party’s burden of proof in an NLRB proceeding, 5 there was more than just disbelief here. Rather, the ALJ relied on D’Anella’s direct testimony that he neither threatened nor harassed his fellow employees, testimony that was corroborated in important part by both Baratta and another employee, Frank Meza.
Finally, Shamrock argues that the Board erred by using the
Bumup & Sims
test in the first place, rather than applying the better-known
Wright Line
formula.
See Wright Line,
As the Board explained below, however, and as this court has explained before,
Wright Line
is inapplicable to cases — like this one — in which the employer has discharged the employee because of alleged misconduct “in the course of’ protected activity.
Shamrock Foods Co.,
337 N.L.R.B. No. 138, at 1;
see Cadbury Beverages,
Shamrock contends that, the above notwithstanding, this case cannot be distinguished from
Frazier Industrial Co., Inc. v. NLRB,
Having rejected the employer’s first claimed rationale, we then turned to its second: that “even if [the employee’s] actions constituted protected activities, its termination of [his] employment was lawful because it would have discharged him in the absence of protected conduct for his insubordination and dishonesty.” Id. at 756; see id. at 759. This second rationale was aptly characterized as “the company’s Wright Line defense,” because the misconduct to which it referred — insubordination and dishonesty — was not alleged to have occurred in the course of protected union solicitation, but rather during a subsequent conversation between the employee and his supervisor. Id. at 759-60. 7 *1137 Shamrock, by contrast, did not offer a rationale for firing D’Anella that was unconnected to his union activity, and the Board therefore rightly declined to apply Wright Line to this case.
In sum, we conclude that the NLRB properly applied the Burnup & Sims test to the discharge of D’Anella, and that the Board’s conclusion that Shamrock violated section 8(a)(1) is supported by substantial evidence.
III
We next consider the NLRB’s determination that Shamrock’s night-shift manager, Bud Shalley, unlawfully interrogated warehouse worker David Trujillo about the union’s organizing efforts. Trujillo testified that on or about June 4, 1998, in the midst of the organizing campaign, Shalley approached him while he was sitting alone in a warehouse office completing paperwork. After a few moments of. small talk, Shalley asked Trujillo if he had heard anything about the union and whether D’Anella had asked Trujillo to sign a union card. When Trujillo answered that he had “not yet” been asked, Shalley walked out of the office. J.A. at 83. A few days later, on June 9, Shalley again approached Trujillo in the warehouse office. This time, Shalley said: “I can’t believe Vinnie [D’Anella] hasn’t come to you yet about the union.” When that remark failed to evoke a response, Shalley followed up with: ‘Well, if you find out that Vinnie’s trying to hand out union cards, let me know.” Id. at 83-84. Trujillo testified that he promised Shalley that he would keep his “eyes open.” Id. at 84; see Shamrock Foods Co., 337 N.L.R.B. No. 138, at 4 (ALJ Op.).
Although Shalley denied that either conversation took place, the ALJ credited Trujillo’s account and concluded that the conversations, as described by Trujillo, violated section 8(a)(1). The Board affirmed. In its petition for review, Shamrock contends both that the conversations never took place, and that even if they did, they did not violate the NLRA.
We first address Shamrock’s fallback argument that even if the conversations did occur, they were not unlawful. This argument requires little discussion. The questioning of an employee about union activities or sympathies constitutes unlawful interrogation “if, under all the circumstances, it reasonably tends to restrain, coerce, or interfere with rights guaranteed by the Act.”
Perdue Farms, Inc. v. NLRB,
Shamrock’s principal contention is that substantial evidence does not support the ALJ’s finding that the conversations between Shalley and Trujillo took place at all. But there plainly is such evidence: namely, Trujillo’s own testimony. And while, as the ALJ recognized, “Shalley flatly denied Trujillo’s assertions,” Shamrock Foods Co., 337 N.L.R.B. No. 138, at 4 n. 6, we must defer to the judge’s assessment that Shalley’s testimony was not credible, id.
Shamrock argues that Shalley’s claim, that he did not talk to Trujillo about the union on June 4 or 9, is proven by the fact that he did not even know about the union’s organizing efforts until later that month. Although the ALJ acknowledged Shalley’s claim of ignorance, he also noted that Frank Meza, a warehouse employee and union supporter, had testified to the contrary. According to Meza, an “upset” Shalley spoke to him about unionization around June 1, 1998, saying “[w]e really don’t need a union unless you’re mistreated” and “[t]hey don’t need a union here.” Id. at 3 (quoting J.A. at 98). After evaluating both Shalley’s and Meza’s testimony, the ALJ concluded: “[Shalley] claims that he first learned of the union drive and D’Anella’s activity later in June. However, as Meza’s account of an earlier conversation is uncontradicted, I do not credit Shalley’s denials here.” Id. at 4 n. 6.
Shamrock seizes on the word “uncontra-dicted” in the preceding quotation, insisting that it demonstrates that the ALJ was unfamiliar with the factual record. Meza’s account was not “uncontradicted,” Shamrock points out, because Shalley himself contradicted it by denying that he had ever spoken with Meza about the union. According to Shamrock, the ALJ’s “ignorance of the record” om this point means that his decision rests on a “mistaken notion,” and hence that it cannot be sustained. Shamrock Reply Br. at 21.
But Shamrock is grasping at straws. There is no doubt that the ALJ knew full well that Shalley had denied speaking with Meza, because the ALJ expressly said so at the outset of the same section of his opinion.
See Shamrock Foods Co.,
337 N.L.R.B. No. 138, at 3 (“Shalley denied that he made the statements attributed to him by employees Frank Meza and David Trujillo detailed below.”). It is clear, then, that the ALJ was fully conversant with the record and simply concluded that Meza’s testimony was uncontradicted by credible evidence. And as the ALJ’s decision to credit the testimony of Meza and Trujillo rather than that of Shalley is not “patently unsupportable,” we must and do defer to it.
Tasty Baking,
IV
For the foregoing reasons, we deny Shamrock’s petition for review and grant the Board’s cross-application for enforcement of its order.
Notes
. This case was considered on the record from the NLRB and on the briefs submitted by the parties. See Fed. R.App. P. 34(a)(2); D.C.Cir. Rule 34(j).
. See Cadbury Beverages,
.
See also Dallas Gen. Drivers v. NLRB,
. As Shamrock notes, at one point the ALJ referred to, and rejected, what he characterized as Shamrock’s “affirmative defense” — a reference that Shamrock interprets as requiring it to bear the burden of proof. Shamrock Foods Co., 337 N.L.R.B. No. 138, at 10 (ALJ Op.). In context, however, it is clear that the ALJ’s reference was not to the burden of proof under Burnup & Sims, but to Shamrock's claim that the company was entitled to an affirmative defense of good faith under the Wright Line test. The Board itself disavowed the ALJ’s entire discussion of good faith, correctly concluding — as we discuss below — that Wright Line is inapplicable here. See id. at 1.
.
Cf. Reeves v. Sanderson Plumbing Prods., Inc.,
. That analysis was conducted in connection with the first step in the
Wright Line
test, which asks whether "protected activity” motivated the adverse employment action.
Frazier Indus. Co.,
. Applying
Wright Line,
we went on to hold that the Board reasonably rejected the em
*1137
ployer’s defense because "[s]ubstantial evidence supported] the Board’s finding that [the plant manager] decided to terminate [the employee] for the union activities, and not for insubordination and dishonesty.”
Frazier Indus. Co.,
