A study was conducted to examine the relationship between three employee variables--perceived job satisfaction, ambiguity tolerance, and locus of control--and an employee's propensity to participate actively in the organization's communication network (network propensity). Relevant data were gathered from 108 members of an engineering firm who represented three employee levels (engineers, engineering supervisors, and department general supervisors). Data analysis indicated that employees with low job satisfaction had a greater propensity to use the informal communication network than did those with high job satisfaction. Conversely, employees with high job satisfaction had a greater propensity to use the formal communication network than did those with low job satisfaction. No relationship was found between the employee personality variables and network propensity. (A copy of the measure of network propensity is appended.) (FL)