A nursing home needed to expand and renovate its building. They hired an architect to help with the redesign of the building. Shortly after beginning the work the architect quit. One member of the administrative staff who had lots of knowledge in architect and design, took control of the situation and ended up leading the project and doing the work of the architect in a perfectly professional manner. Now the question is can the staff member demand payment for the work as an architect, or did he lose his claim for payment because he did not ask for it up?
Rav Vosner answers (Shevet HaLevi 10:280) that if the inside employee did truly professional work, he has a right to be paid. The fact that he did not negotiate extra payment for undertaking the project up front does not in any way absolve the institution of paying him.
Important Note: We bring this tshuvah as a starting point for discussion and not to convey any halacha. We try to convey the Tshuva to the best of our ability. We admit that our understanding may not be accurate. One should learn the tshuva to verify the accuracy of our interpretation. Please understand that this Tshuva may not be the final word on this topic. One should consult a Rav before drawing any conclusions.