Servair petitions this court under 29 U.S.C. § 160(f) to set aside an order of the National Labor Relations Board finding that Servair violated § 8 of the National Labor Relations Act, 29 U.S.C. § 158, by discharging 19 employees. Servair contests the Board’s refusal to defer to an earlier arbitration decision in Servair’s favor. The Board found that the strike had been in response to the illegal discharge of a fellow-employee and was therefore protected activity despite the “no-strike” clause in the collective bargaining agreement. See Mas-
tro Plastics Corp. v. Labor Board,
I. Facts
Servair furnishes ground services to airlines with routes passing through Anchorage, Alaska. In 1976, while Servair’s employees were represented by the International Association of Machinists and Aerospace Workers (Machinists), the Teamsters Union began an organizing campaign at Servair, and in 1977 the Teamsters filed a representation petition with the Board.
During the election campaign Servair management repeatedly attempted to influence the outcome of the election. Servair management interrogated employees, either instigated surveillance of employees or created the impression of surveillance, threatened to discharge employees if the Teamsters won, and discriminated against Teamster job applicants. The administrative law judge found that these practices violated 29 U.S.C. § 158. The company did not except to the findings, and does not contest them here.
Events following the election in April 1977 are, however, disputed. A third union, the International Union of Operating Engineers, intervened, was openly supported by management, and received a majority of the employees’ votes. In June, Servair fired George MacLean, who had been active in the Teamsters’ organization campaign. MacLean filed a grievance and was reinstated. MacLean later left the company— voluntarily, according to Servair.
Before the grievance committee met on MacLean’s dischаrge, however, 19 Servair employees stopped work to protest his firing. The Machinists-Servair collective-bargaining agreement, still in force, contained a “no-strike” clause. Servair discharged the strikers, but on the same day offered to reinstate them. Most of the 19 striking *1438 employees did not return to work, but filed grievances. The grievances were denied and went to arbitration under the terms of the bargaining agreement. The Maсhinists, representing the strikers at arbitration, chose to pursue a theory that the work stoppage did not constitute a strike. The arbitrator upheld the discharges, however, finding that the stoppage had violated the “no-strike” clause in the contract.
At approximately the same time the grievances were filed, the Teamsters filed charges with the Board alleging that Ser-vair had committed an unfair labor practicе by discharging the 19 employees. The Board issued a complaint that was consolidated with the pending complaints arising from the election. The administrative law judge, refusing to defer to the arbitral award upholding the discharges, found that MacLean’s discharge had been discriminatory and that the strike in response to his discharge was protected activity. The administrative law judge concluded that the discharge of the strikers was an unfair labor practice and recommended that the strikers be reinstated with back pay. The Board adopted the findings and recommendations of the administrative law judge.
II. Deferral
The primary issue before us is whether the Board properly refused to defer to the arbitral award upholding the discharge of the 19 strikers.
The Board is provided with statutory authority under section 10(a) of the National Labor Relations Act, 29 U.S.C. § 160(a),
1
to adjudicatе and remedy unfair labor practices. The presence of other means of resolving disputes, including arbitration, does not oust the Board of jurisdiction.
NLRB v. Strong,
In making its deferral decision, the Board is required to accommodate two competing statutory objectives.
N.L.R.B. v. Max Factor and Co.,
The task of accommodating these two objectives falls initially on the Board.
Ad Art,
The Board first articulated its deferral standards in
Spielberg Manufacturing Company,
The Board later narrowed its deferral policy, concluding that deferral would be inappropriate even when the
Spielberg
requirements had been satisfied unless there was at least some evidence that the arbitrator had in fact passed upon the unfair labor practice issue.
Yourga Trucking, Inc.,
Soon thereafter, however, the Board concluded that it was being insufficiently deferential to arbitral awards. Adopting the position of the dissenting opinions in
Your-ga
and
Aireo,
the Board held in
Electronic Reproduction Service Corp.,
This expansion of
Spielberg
soon met with judicial resistance.
See Banyard v. N.L.R.B.,
In apparent response to this judicial resistance, the Board overruled
Electronic Reproduction.
In
Suburban Motor Freight, Inc.,
Applying its deferral criteria here, the Board gave essentially two reasons for its decision not to defer: (1) an “inherent con *1440 flict of interest” in the Machinists’ representation of the striking employees; and (2) the apparent failure of the arbitrator to address the unfair labor practice issues. 5
Servair contends that the Board abused its discretion in concluding that the arbitrator had not addressed the statutory issue. 6 Servair notes that it had explicitly requested that the arbitrator address the possibility that the strike was a response to alleged unfair labor practices, in order to satisfy the Spielberg criteria.
Nonetheless, the Machinists, who represented the strikers at arbitration, offered no justification, statutory or otherwise, for the strike. Instead, the Machinists pursued the theory that the activity giving rise to the discharges was not a strike for purposes of thе contract’s “no-strike” clause. Our reading of the arbitration transcript reveals that the Machinists offered no evidence or contention that would justify striking despite the “no-strike” clause. Similarly, the arbitrator’s opinion and award gives no indication whatsoever that he considered a possible statutory justification for the strike. If anything, the opinion strongly suggests that the arbitrator, aware that an NLRB hearing to consider the statutory vаlidity of the charges was pending, chose to address only the contractual issue. 7
The contention by Servair that because the statutory issue had been raised, the arbitration provided “ample opportunity” to develop testimony regarding the reasons for the strike, misinterprets the “clearly decided” requirement. While it is not necessary for the arbitrator to expressly review the statutory issue in his written memorandum,
Bloom v. N.L.R.B.,
Servair also contends that this court has not unequivocally accepted the additional criteria of
Suburban Motor Freight
and
Stephenson.
Although this contention is incorrect,
see Ad Art,
Here, however, the resolution of the statutory issue is not dependent on resolution of the contractual issue. The arbitrator’s determination that the activity giving rise to the discharges did in fact violate the contract, in no way disposes of the statutory issue of whether the strike was in response to an unfair labor practice on the part of Servair and, if so, whether that unfair labor practice was so serious as to deprive Servair of the protection of the “no-strike” clause in the contract.
See Mastro Plastics Corp. v. NLRB,
Having concluded that the Board’s refusal to defer was appropriate, it is unnecessary to consider whether the “apparent” conflict of interest betwеen the Machinists and the 19 strikers also justifies the Board’s refusal to defer.
III. The Nature of the Unfair Labor Practice Giving Rise to the Strike
Servair also contends that the Board erred in concluding that the strike was protected activity under
Mastro Plastics Corp. v. NLRB,
Here, both the administrative law judge and thе arbitrator found the primary reason for the strike to have been Mac-Lean’s discharge. The Board, adopting the administrative law judge’s findings, concluded that Servair violated the Act by discharging MacLean. This determination is supported by substantial evidence, and therefore, we affirm it.
See Universal Camera Corp. v. Labor Bd.,
Having affirmed the Board’s determination that MacLean’s discharge was an unfair labor practice, we must consider the strike to have beеn an unfair labor practice strike. Accordingly, under the Mastro Plastics rationale, we must determine whether the unfair labor practice was “serious.”
The administrative law judge concluded that Servair’s discharge of MacLean was a “serious” unfair labor practice because, “[i]n addition to discharging MacLean illegally, [Servair] engaged in other actions in violation of Section 8(a)(1), (2), and (3) of the Act... . [Servair’s] course of conduct, *1442 designed to prevent the Teamsters from becoming the representative of its employees, was pervasive, forceful, and in flagrant violation of the Act.” The Board, in turn, adopted the administrative law judge’s conclusion.
The Board’s determination whether an employer’s unfair labor practices are “serious” is entitled to “substantial deference” and should not be overturned “unless it is clearly shown that the Board hаs acted arbitrarily or capriciously.”
Isla Verde Hotel Corp. v. N.L.R.B.,
Given Servair’s repeated interference with its employees’ selection of a bargaining representative, of which MacLean’s discharge was a part, we cannot say that the Board acted arbitrarily by determining that MacLean’s discharge was a “serious” unfair labor practice for purposes of the Mastro Plastics rationale.
Servair’s reliance on
Caterpillar Tractor Co. v. N.L.R.B.,
Here, MacLean’s discharge was not found to be a good faith mistake but discriminatory and part of a wide-ranging pattern of conduct resorted to by Servair in an attempt to interfere with its employees’ selection of a bargaining representative. Accordingly, the policies supporting the Caterpillar decision do not adhere in this case. Thus, we affirm the Board’s finding that the discharge of MacLean was a serious unfair labor practice.
IV. The Remedy
A. Reinstatement of MacLean
MacLean, as noted above, was fired, and then reinstated by Servair. Shortly thereafter he left Servair’s employment. Servair contends that the separation was voluntary. The Board nonetheless upheld the administrative law judge’s decision that MacLean be reinstated with back pay. Although the Board was unable to determine whether MacLean’s departure was truly voluntary, we find nothing punitive in the remedy ordered.
The purpose of reinstatement orders is to restore the wronged worker to the position in which he would have been without the unfair labor practice.
Golden State Bottling Co. v. NLRB,
If the Board’s order were to deprive Ser-vair of the opportunity to show that Mаc-Lean’s departure was in fact voluntary, it would risk being punitive rather than compensatory and therefore would be unenforceable.
Id.
However, the Board’s order provides that Servair will have the opportunity to address the nature of MacLean’s departure at the compliance proceeding. The order provides that if Servair can show that MacLean’s departure was voluntary, his right to reinstatеment is forfeited. Accordingly, the Board’s order reinstating MacLean can be enforced. See
N.L.R.B. v.
*1443
Joseph Magnin Co.,
B. Interest on back pay
Servair does not challenge the Board’s jurisdiction to order the reinstatement of the 19 employees with back pay and interest upon a determination that they had been illegally discharged. Servair does, however, seek a tolling of the interest on such back pay awards during the period this case was on remand tо the Board. Servair argues that its liability for such interest has been unjustifiably enhanced by the Board’s failure to adequately consider the proper deferral criteria when the case first arose. This argument has no merit.
As noted above, the object of the exercise of the Board’s broad remedial powers here should be to “restore the economic status quo that would have obtained but for [the] wrongful discharge.”
Golden State Bottling Co. v. NLRB,
V. Conclusion
The Board’s determination that Servair’s discharge of MacLean and the 19 strikers violated the Act is supported by substantial evidence on the record as a whole. The Board did not abuse its discretion by refusing to defer to the arbitrator’s award under the facts of this case. We also find that the remedy ordered by the Board fairly effectuates the policies of the Act. For these reasons, we enfоrce the order of the Board.
Notes
. 29 U.S.C. § 160(a) provides in part: “The Board is empowered, as hereinafter provided, to prevent any person from engaging in any unfair labor practice (listed in section 158 of this title) affecting commerce. This power shall not be affected by any other means of adjustment or prevention that has been or may be established by agreement, law or otherwise. ...”
. The Labor Management Relations Act, section 203(d), 29 U.S.C. § 173(d) provides, in part: “Final adjustment by a method agreed upon by the parties is declared to be the desirable method for settlement of grievance disputes arising over the application or interpretation of an existing collective-bargaining agreement. ...”
. The National Labor Relations Act, section 7, 29 U.S.C. § 157 provides, in part: “Employees shall have the right to self-organization, to form, join, or assist labor organizations, to bargain collectively through representatives of their own choosing, and to engage in other concerted activities for the purpose of collective bargaining or other mutual aid or protection .... ”
. In
NLRB v. Motor Convoy, Inc.,
. The decision and order of the three-member panel is comprised of three separatе opinions. Although each member concurred in the decision not to defer, each did so for somewhat different reasons. Chairman Van De Water relies on the apparent “serious conflict of interest.” Member Fanning relies on the failure of the arbitrator to address the statutory issue and the incompatibility of the arbitrator’s award with Board and court precedent. Member Jenkins cites both the “apparent conflict” and the failure to address the statutory issue as the basis for his conclusion that the arbitration “was not fair and regular and that it would be repugnant to the purposes of the Act to defer to the arbitrator’s award.” It is unclear whether Member Jenkins found deferral here to be repugnant because he determined that Ser-vair’s activities “constituted a sufficiently flagrant interference with protected activities that the duty to рrevent unfair labor practices outweighed the policy of encouraging arbitration,”
see Max Factor,
. Servair also argues that the “clearly decided” requirement, not adopted by the Board until 1980,
see Suburban Motor Freight,
. “A hearing is scheduled on November 29, 1977 and the question of whether the discharge of the employees violated the NLRA will be one of the matters considered.
For purposes of this arbitration grieving the discharge of the 19 employees on June 20, 1977, the Arbitrator finds that the collective bargaining agreement between the parties to this dispute was in full force and effect, and the employees represented by the Union were bound by the terms and provisions of that agreement.” Arbitrator’s Opinion and Award, at 3. (Emphasis added).
