Section 302(b) prohibits labor organizations from demanding such payments from employers. Id. § 186(b). 2 . Section 302(c)(4) provides that the section does not apply "with respect to money deducted from the wages of employees in payment of membership dues in a labor organization: Provided, That the employer has received from each employee, on whose account such deductions are made, a written assignment.” 29 U.S.C. § 186(c)(4). 3 . We note that whether particular payments may be required as membership dues under section 8(a)(3) is an entirely separate issue from whether they are a permissible subject of check-off under section 302(c)(4). See, e.g., NLRB v. Food Fair Stores, Inc., 307 F.2d 3, 12 (3d Cir.1962); Grajczyk v. Douglas Aircraft Co., 210 F.Supp. 702, 705-06 (S.D.Cal.1962) (<HOLDING>). The section 8(a)(3) question has not been
holding that a promissory statement of future intent which does not come to fruition is not an unfair or deceptive practice holding that checkoff for agency fees does not violate section 302 but noting whether or not the agreement by which checkoff for agency fees was brought about is an unfair labor practice or otherwise unlawful is quite a different question   holding that deference to an agency interpretation is not appropriate where a statute is administered by more than one agency recognizing that it is an open question whether drpa is a federal agency governed by the apa or a state agency governed by state administrative law holding an agency decision is not final during the time the agency considers a petition for review