This is an application for enforcement of an order requiring an employer to cease and desist from refusing to bargain with a union certified by the National Labor Relations Board ("the Board") as its employees' bargaining agent. The primary issue is whether substantial evidence supports both the Board's conclusion that, despite a supervisor's prounion activities, the election that resulted in certification of the union as the collective bargaining agent should not be set aside and the Board's concomitant order requiring the employer to bargain with the union.1 After considering the record as a whole, and finding that the order is amply supported by the evidence, we grant enforcement.

* The employer, Welfed Catfish, Inc. ("Welfed"), contends that prounion conduct by one of its supervisors, Gus Lampkin,2 coerced its employees and thus invalidated the election by which the union was chosen. Lampkin's involvement, as described by Welfed, with the omission only of conclusory comments, began on May 4, 1980, when two fellow employees visited him at his house one day and solicited his support for the union. He signed a union authorization card and accepted approximately ten cards to be signed by other employees. He signed his name on the backs of these cards. Later that day two other employees, one of whom was a cousin of Lampkin's wife, came to his house. He gave each of them a card, which each signed.

On May 7, Lampkin attended a union meeting at which about forty employees were present. Four of the employees present, including Lampkin, had been given authorization cards so they could communicate with other employees to "ask them if they wanted to join the union and to let them sign the cards." At the meeting Lampkin passed out a few cards.

On May 18, a Sunday, Lampkin attended another union meeting. About forty to fifty employees were present, and Lampkin signed the attendance roster with the other employees. One of the union organizers asked for a show of hands by anybody who had talked with any of the people running the plant. Lampkin raised his hand. The people running the meeting asked him to remain after the meeting. Lampkin did and gave "the union man" a statement about a conversation Lampkin had with a company official.

On May 28, Welfed officials learned of Lampkin's activities. He was summoned to the office of the plant superintendent who told him emphatically that, because Lampkin was a supervisor, Lampkin could not support the union at all or vote in the election. At a supervisors' meeting on June 2, which Lampkin attended, this point was reiterated. Thereafter Lampkin showed no further support for the union. He asked a union organizer to return the statement he had made on May 18. After Lampkin received the statement, he destroyed it. On June 24, the election was held, and the union won.

Welfed contested the election, but was denied relief,3 and the union was certified as the exclusive representative of Welfed's employees. After the union sought to bargain with Welfed, and Welfed refused, the union charged Welfed with committing an unfair labor practice. 29 U.S.C. § 158(a)(5) (1976).4 The Board's Acting Regional Director issued a complaint against Welfed. The Board then granted summary judgment against Welfed, stating

(a)ll issues raised by (Welfed) in this proceeding were or could have been litigated in the prior representation proceeding, and (Welfed) does not offer to adduce at a hearing any newly discovered or previously unavailable evidence, nor does it allege that any special circumstances exist herein which would require the Board to reexamine the decision made in the representation proceeding.5

Welfed objects to this grant of summary judgment. It contends that the election should be set aside because Lampkin's prounion conduct coerced its employees and thereby destroyed the "laboratory conditions" required in a union representation election. E.g., NLRB v. Decatur Transfer & Storage, Inc., 430 F.2d 763, 764 (5th Cir. 1970); General Shoe Corp., 77 N.L.R.B. 124, 127 (1948). Alternatively, Welfed urges that the evidence requires that it at least be granted a hearing on its contentions. In opposition, the Board argues, inter alia, that Welfed cannot object to the election because Welfed learned of Lampkin's prounion conduct but did nothing to dispel the effect that conduct had, or might have had, on Welfed's employees.6

Although we review the Board's findings only to determine whether on the record as a whole they are supported by substantial evidence, we do not act as automatons, nor may we abdicate our judicial function. The Board's findings deserve respect but do not command submission. We must make our own assessment of the reasonableness and fairness of the Board's conclusions. NLRB v. Brown, 380 U.S. 278, 290-92, 85 S. Ct. 980, 987-89, 13 L. Ed. 2d 839, 847-850 (1965); Universal Camera Corp. v. NLRB, 340 U.S. 474, 488, 71 S. Ct. 456, 465, 95 L. Ed. 456, 467 (1951); Dow Chem. Co. v. NLRB, 660 F.2d 637, 643 (5th Cir. 1981). Yet we recognize that Congress has vested the Board with a wide degree of discretion in matters relating to representation proceedings. NLRB v. A. J. Tower Co., 329 U.S. 324, 330, 67 S. Ct. 324, 328, 91 L. Ed. 322, 325 (1946); NLRB v. Gulf States Canners, Inc., 634 F.2d 215, 216 (5th Cir.) (per curiam), cert. denied, 452 U.S. 906, 101 S. Ct. 3033, 69 L. Ed. 2d 407 (1981); NLRB v. Osborn Transp., Inc., 589 F.2d 1275, 1279 (5th Cir. 1979).7

The longstanding rule is that an employer may not stand idly by after learning that one of its supervisors has engaged in prounion or antiunion conduct before a representation election. Rather, the employer must take steps to dissipate the possible harmful effect of the supervisor's conduct on its employees. NLRB v. Air Control Prods., 335 F.2d 245, 250 (5th Cir. 1964). If the employer fails to take such steps, it cannot raise the supervisor's alleged misconduct as a ground for setting aside the election; its inaction estops it from doing so. "(W)hen an employer knows of advocacy of a union by supervisory personnel and takes no steps to dissipate its effect, such conduct cannot be used as a basis for setting aside the election." NLRB v. Dobbs House, Inc., 613 F.2d 1254, 1257 (5th Cir. 1980).8

Welfed recognizes this principle but advances three arguments9 to avoid its operation. Welfed first argues that it did not stand idly by, but did in fact tell Lampkin and other supervisors not to engage in advocacy before the election. Such action, however, fails to satisfy the employer's duty to dissipate the effect of a supervisor's advocacy. It communicates nothing to the employees and leaves the impact of the supervisor's remarks unsoftened. The employer must "take appropriate steps to disabuse its employees of the effect of" a supervisor's advocacy. Hadley Mfg. Corp., 106 N.L.R.B. 620, 621 (1953) (emphasis added);10 cf. E. I. DuPont de Nemours & Co., 81 N.L.R.B. 238, 240 (1949) (employer reprimanded antiunion advocates "in the presence of a group of workers"). Once Welfed learned of Lampkin's actions, it could not await the election results, without making any effort to dissipate any coercive effect Lampkin's conduct may have had, then use his activities to challenge the outcome if the vote proved unfavorable to Welfed. Cf. Camp Milling Co., 109 N.L.R.B. 471, 473 (1954). Because Welfed never communicated with its employees about Lampkin's alleged misconduct, its first argument must fail.

Welfed next argues that the union also stood idly by while benefiting from Lampkin's misconduct. Assuming that the facts support this argument, we deem it irrelevant, for Welfed, and not the union, is challenging the election; thus Welfed, and not the union, is trying to benefit from its own inaction. Cf. E. I. DuPont de Nemours & Co., 81 N.L.R.B. at 239 (union acquiescence in alleged election misconduct estops it from challenging election). Whether the union also had a duty and, if so, whether it also violated that duty11 by doing nothing to disclaim the benefits of Lampkin's conduct is, therefore, immaterial.

Finally, Welfed asserts that public disavowal of Lampkin's conduct would have been futile because the coercive effects of that conduct had already taken effect and could not have been negated. But Welfed refers to no evidence that supports this assertion, and we have found none. Welfed had almost a month to take steps to negate Lampkin's conduct. It has failed to prove that, during this lengthy period, it would have been unable to dissipate the effect of Lampkin's conduct among its employees. See Skogrand-Buesing, Inc., 241 N.L.R.B. 292 (1979) (five days sufficient to correct supervisor's coercive threat).12

Because Welfed stood idly by after it learned that Lampkin had engaged in prounion conduct, it is unnecessary for us to discuss the other arguments raised in this appeal, which deal with the alleged coercive effect of that conduct. Even if the conduct pressed upon the employees, the employer should have acted before the election instead of awaiting its results before acting. Talladega Cotton Factory, Inc., 91 N.L.R.B. 470, 472 (1950).13

Because substantial evidence supports both the Board's conclusion that the representation election should not be set aside and its order requiring Welfed to bargain with the union, we ENFORCE the Board's order.