It presents statistical estimates on the number of people who belong to a labor organization in Puerto Rico. They are presented by: gender, age, marital status, relationship with the head of household, education, type of employment, occupation and industries. The tables in the publication present the data corresponding to the study date. The first table shows the percentage of the number of people who belong to a labor union, comparing the result of the month and year of study with the result of studies carried out since 1970.