This 1980 profile provides an overview of employment stability and change among a small random sample of U.S. and Canadian members of The American Institute of Physics (AIP) member societies: The American Physical Society; Optical Society of America; Acoustical Society of America; The Society of Rheology; American Association of Physics Teachers; American Astronomical Society; American Crystallographic Society; American Association of Physicists in Medicine; and American Vacuum Society. Specific topics presented in the text and illustrated in charts and graphs include: employment 1980; subfields; salaries; employment 1979-80; salary increases 1979-80; employment and salary changes 1979-80; and society membership profiles. Five appendices include: (1) detailed statistical tables on 1980 demographic and employment characteristics, 1980 salaries, and 1979-80 salary comparisons; (2) a list of geographic regions; (3) dropping society membership; (4) methodology used in the survey; and (5) a list of definitions and technical notes. (SK)