Appellants, Operating Engineers Pension Trust and other Operating Engineers benefit trusts (the Trusts), appeal the district court’s decision which found that appellee, Luigi Giorgi, a small subcontractor, is not bound by a collective bargaining agreement between the general contractor and the Operating Engineers Union. As a condition to remaining on the job, Giorgi signed a “short-form” agreement which incorporated the provisions of the collective bargaining agreement and which required Giorgi to make double contributions for the hours worked by one of Giorgi’s employees even when he was not performing work within the jurisdiction of the union. We commend the district court’s effort to reach a fair result, but the case law of this circuit requires us to reverse.
Facts
On April 12, 1979, Giorgi, a subcontractor, was working at a building site. The general contractor had signed a collective bargaining agreement with Local 12, Operating Engineers Union. One of Giorgi’s employees, Flores, was a member of the Laborers Union. On April 12, 1979, while Flores was operating a skiploader, a task within the jurisdiction of the Operating Engineers, the general contractor was notified that Giorgi could not stay on the job site unless he signed a collective bargaining agreement with the Operating Engineers.
After a brief conversation with the business agent for the Operating Engineers, Giorgi signed a short form agreement which incorporated the Master Labor Agreement between the Operating Engineers and the Southern California General Contractors. The Master Agreement authorizes the Labor Management Adjustment Board to interpret and enforce the Master Agreement.
In 1972, seven years before Giorgi signed the agreement, the Adjustment Board adopted a resolution which provides:
[W]hen an employee has been dispatched by the Union to a Contractor and the employee performs any work whatsoever covered by the Agreement, the Contractor shall be obligated to pay fringe benefit contributions to the Trusts at the required rate for each and every hour worked by the employee or paid for by the Contractor.
(Emphasis added).
The Adjustment Board noted that an employee sometimes is a member of more than one union and may be dispatched by more than one union to the same job. The Adjustment Board stated that this practice conflicts with the intent of the collective bargaining agreement and that therefore “any employee dispatched by the Union under this Agreement shall perform only work covered by this Agreement, and fringe benefit contributions shall be payable on all hours worked by such employee or paid for by the Contractor.”
From April 12, 1979 through March 31, 1981, Flores worked both as a laborer and as a skiploader operator. Giorgi reported *622the hours Flores worked as a laborer to the Laborers Union and reported the hours Flores worked as a skiploader to the Operating Engineers. Giorgi contributed to each union’s pension benefit trusts according to the hours he reported to each union.
On May 6,1983, the Operating Engineers Trusts filed an action to require Giorgi to contribute to the Trusts for all the hours Flores worked, not just as a skiploader but also as a laborer.
District Court Proceedings
Giorgi testified that on April 12, 1979, when he signed the short form agreement, the business agent for the Operating Engineers assured him that he would be called upon to contribute to the Trusts only for the hours Flores worked as a skiploader. The business agent denied that he had such a conversation.
The district court found Giorgi’s testimony to be credible and the business agent’s testimony incredible. The court also found that the only hours Flores worked which Giorgi did not report to the Trusts were reported and paid to the Laborers Union trust.
The district court held that the oral agreement between Giorgi and the business agent is not enforceable. Nevertheless, the court held in favor of Giorgi on the ground that Giorgi is not bound by the Adjustment Board’s 1972 resolutions because he did not receive notice of the resolutions. The court also found that even if Giorgi is bound by the resolutions, they do not apply because Flores was not “dispatched” by the union as required by the resolutions.
The district court dismissed the Trusts' action. The Trusts appeal.
Standard of Review
We review de novo the district court’s interpretation of the collective bargaining agreement. Operating Engineers Pension Trust v. Charles Minor Equipment Rental, Inc., 766 F.2d 1301, 1303 (9th Cir.1985).
Discussion
Giorgi operates a small family-owned cement business. He was not a party to the collective bargaining sessions when the Master Labor Agreement was drafted, and he was not aware of the Adjustment Board's 1972 resolutions which require him to make double contributions for the hours Flores worked. Giorgi testified, and the district court found, that he relied on the statements of the business agent that Gior-gi would not have to make contributions to both the Laborers Union and the Operating Engineers for the same hours.
The Trusts claim more than thirteen thousand dollars in unpaid fringe benefit contributions for Flores even though Giorgi already paid contributions on every hour Flores worked. The Trusts contend that the double contribution requirement applies even if the employee’s benefits never vest.
Under the case law of this circuit, we must hold in favor of the Trusts.
This court in Waggoner v. Dallaire, 649 F.2d 1362 (9th Cir.1981), rejected attacks against the same Master Labor Agreement, and the same “short form” collective bargaining agreement, which the same international union had entered into with an individual contractor. The trial court found that the Local 12 business agent had represented that if the short form agreement was entered into, the trust benefit terms would not be enforced.
In that case, this court held that oral agreements between an employer and a union representative may not be considered when the court interprets a collective bargaining agreement. Id. at 1366.
The district court correctly concluded that any oral agreement between Giorgi and the business agent that contributions would be limited to covered employment is unenforceable.
Under Dallaire, we are precluded from finding that the short form agreement that Giorgi signed in order to stay on the job is an unenforceable contract of adhesion. In Dallaire, we stated that “parties to a col*623lective bargaining agreement are conclusively presumed to have equal bargaining strength.” Id. at 1367.
Giorgi is bound by the 1972 resolutions even though he did not receive notice of them. The Adjustment Board’s resolutions are enforceable even though they are not written into the Master Labor Agreement. Waggoner v. C & D Pipeline Company, 601 F.2d 456, 459 (9th Cir.1979).
Giorgi’s contentions that the 1972 resolutions do not apply to him are not supportable. First, Giorgi contends that the 1972 resolutions do not contemplate a situation in which an employee belongs to more than one union. This court has already held that an employer must contribute to union trust funds for all the hours his employees work even if some of their work is not within the union’s jurisdiction. Maxwell v. Lucky Construction Company, Inc., 710 F.2d 1395 (9th Cir.1983); Waggoner v. C & D Pipeline Company, supra, 601 F.2d 456 (9th Cir.1979).
Giorgi also contends that the Operating Engineers did not “dispatch” Flores because Flores was already working for Gior-gi when Giorgi signed the short form agreement.
After Flores was forced to join the Operating Engineers, the union completed the paperwork necessary to assign Flores to Giorgi. We hold that the union “dispatched” Flores as that term is used in the 1972 resolutions.
Finally, Giorgi contends that the district court properly concluded that the double contribution rule violates section 8(b)(1)(A) of the National Labor Relations Act, which prohibits the restraint or coercion of employees in the exercise of their rights. The purpose of section 8(b)(1)(A) is to prevent “violence, intimidation, and reprisal or threats thereof,” NLRB v. Drivers Local Union No. 639, 362 U.S. 274, 290, 80 S.Ct. 706, 715, 4 L.Ed.2d 710 (1960), none of which are present here. Section 8(b)(1)(A) does not apply.
We hold that Giorgi is bound by the Master Labor Agreement and by the 1972 resolutions which require him to make double fringe benefit contributions for the hours Flores worked, regardless of the nature of that work. This court has considered the Operating Engineers agreement and similar agreements many times. Each time, this court held that the agreement shall be enforced even when the union agent did not explain its terms or the consequences of the signing to the employer and even when the evidence showed that the union agent misled the employer. Established case law in this circuit supports unions when they impose hidden, burdensome obligations on small employers who have little or no bargaining power. Until this court reconsiders these decisions en banc, this situation will persist.
The Trusts are entitled to attorney fees on appeal because they prevailed. Kemmis v. McGoldrick, 706 F.2d 993, 997 (9th Cir.1983).
REVERSED.