Authorization and payment of fees is often delayed because the Social Security Administration does not have evidence (e.g., verification of workers' compensation or public disability benefits, proof of age, etc.) it needs before it can calculate the amount of any past-due benefits, the amount to withhold for direct fee payment and, in the fee agreement process, the fee for the representative's services. Representatives can help speed up the process by submitting the required evidence to Social Security Administration. Determinations of past-due benefits for auxiliary claimants (such as a spouse or child) may also delay the calculation and payment of fees, especially when related claimants do not all share the same interests.