A study of the impact of Proposition 13 on the part-time faculty at California universities and colleges is hampered by: (1) the invisibility of part-time instructors in institutional reports and statements; (2) the confusion of Proposition 13 with other factors, such as declining enrollments; and (3) the fact that the full impact of Proposition 13 has not yet been felt. However, current trends indicate that as financial difficulties intensify, increasing numbers of part-timers will be fired, the conditions of those who remain will worsen, and full-time positions will be converted into part-time slots at an accelerated rate. Background information about part-time faculty demonstrates its vulnerability to lay-offs. Although part-timers make up 58% of the California community college faculty and are increasingly professional, rather than lay, educators, they are underpaid and provided with limited secretarial assistance and few opportunities to participate in faculty meetings. This vulnerability became evident when, after the passage of Proposition 13, 7,000 part-time instructors were laid off, and those who remained experienced a cut in hours. Because of the disportionate number of women and third world people in the part-time faculty as compared to the full-time ranks, Proposition 13 may also be a blow to affirmative action. Part-time instructors must take positive action to alter these trends. (JP)