my father got some minor construction work done at his plot. the contractor hired by him left the work after 4-5 days leaving the work uncompleted. even after requesting him to work he didnt started it so my father hired some other person who completed the job. now after 2 yrs this contractor has sent a notice through labour officer cum conciliation officer via registered post to pay a heavy amount. i am not ale to understand how the authorities got convinced by him that they slappeda notice for amount over 1 lakh. also the notice says to appear there. pls advice what are the legal implications involved in this and should we hire any lawyer to present our side of story. he is trying to harras us and cough up money over this. and there is no legal evidence or paper to support his claims.