NRS 624.320: Allegation and proof of license in action on contract.

No person, firm, copartnership, corporation, association or other organization, or any combination of any thereof, engaged in the business or acting in the capacity of a contractor shall bring or maintain any action in the courts of this State for the collection of compensation for the performance of any act or contract for which a license is required by this chapter without alleging and proving that such person, firm, copartnership, corporation, association or other organization, or any combination of any thereof, was a duly licensed contractor at all times during the performance of such act or contract and when the job was bid.