Written Notice of Identification - Individual (Massachusetts)

"If the person claiming a lien... has no direct contractual relationship with the original contractor, except for liens for labor by persons defined in section one of this chapter, the amount of such lien shall not exceed the amount due or to become due under the subcontract between the original contractor and the subcontractor whose work includes the work of the person claiming the lien as of the date such person files his notice of contract, unless the person claiming such lien has, within thirty days of commencement of his performance, given written notice of identification by certified mail return receipt requested to the original contractor..." Mass. Gen. Laws Ann. ch. 254 §4.