The paper "Managing volunteers and paid workers in a nonprofit operation" coauthored by Gemma Berenguer, William B. Haskell and Lei Li (Purdue University), examines the management problem of nonprofit's complex workforce. The authors study the nonprofit's finite-horizon staffing problem to determine the optimal initial staff planning decisions and per period optimal hiring and assignment decisions given a budget, capacity constraints, and an uncertain supply of volunteers and part-time workers.