Our company (GC) requires that an unconditional lien waiver be signed at the time the check is picked up. However, we have one sub who is refusing to sign the lien waiver until the check clears her account. I tried to explain that's not how it works, and that the signed lien waiver means check is in hand, but we're currently at a standstill. We don't offer Conditional Waivers, and she is refusing to sign at the time of check pick-up, because she is claiming that it is "the law" that the check first clears her account. Any advice?