The assessment and improvement of staff members' subjective valuation of nonpreferred work tasks may be one way to increase the quality of staff members' work life. The Task Enjoyment Motivation Protocol (Green, Reid, Passante, & Canipe, 2008) provides a process for supervisors to identify the aversive qualities of nonpreferred job tasks. Through participative management, the process reduces these aversive qualities while increasing the appetitive properties via the pairing of these tasks with enjoyable consequences. The present study provides an extension of Green et al.'s work through utilization of a concurrent-chains schedule arrangement via the pairing of reinforcing consequences with a target job task using probabilistic outcomes to directly assess job task preferences for eight direct support staff in a human service organization. (Contains 1 figure and 1 table.)