Previous studies of measurement of employment and unemployment have been conducted, but a similar statistical program on job vacancies could provide a more complete and accurate insight into the condition of the labor market for employers, placement agencies, counselors, and vocational education planners. This study tested the feasibility of measuring job vacancies through three quarterly surveys of some 400 employers in the Rochester area in 1965. A 99 percent response by employers demonstrated their willingness to participate in a voluntary statistical reporting program. The definition of a job vacancy as an unfilled job that an employer is actively seeking to fill by hiring a person outside his organization was found to be operational. Major findings included: (1) The total estimate of eight to nine thousand job vacancies represented about 3 percent of all jobs in the country, (2) The sample size of 400 was adequate to provide reliable estimates of vacancies, (3) The estimated cost of continuing quarterly collection of job vacancy data in 146 major metropolitan areas of the U.S. was $8 million to $8.5 million per year. (CD)