Data source(s) used: The statistical business register Asia-employment The statistical business register Asia-employment contains details on the employment of units covered by the business register Asia; since it was set-up in 2011, in the occasion of the Italian “virtual” economic census CIS2011, it is yearly updated. It is organized according to a LEED structure (Linked Employer Employee Database) that brings together information from both sides of the enterprise, individual (workers) and job relation classified according to the international standards on employment, in the reference year. The register Asia-employment contains information on the enterprise, i.e. those characteristics already registered in the Business register Asia, the individual and the main job variables by job typologies. In specific, employment is formed by internal, employees and self-employed, and so-called external workers of an enterprise which represents all people that, not classified as employees or self-employment participate to the productive process of the enterprise on the base of a contract. The group of external workers contains also those temporary workers which can be utilized from a temporary employment agency. Employment is measured in terms of yearly average of job positions, calculated on the base of the presence of the worker in the week of reference of each month. With regards to variables, worker’s characteristics such as sex, age, nationality and education are available for all the typologies; job variables vary according to the job typologies. Available variables are: professional status, type of contract, beneficiary of active labor policies, for employees; self-employment in strict sense and contributing family workers, for total self-employment; class of remuneration, type of contract and period of work, for external “parasubordinati” workers; period of work, for temporary workers.From the 2014 version three more innovations have been introduced: 1-The link with SIM (Microdata Integrated System) so that unique identification codes are attributed to each individual-worker. SIM is a centralized system that integrates and stores all administrative data feeding the base Registers. Specifically, the non-invariant character of the workers (gender, age and place of birth) is derived from SIM. This integration ensures that processing of microdata of workers is carried out in compliance with the current legislation on the protection of personal data. 2-For the attribution of the variable “beneficiary of contributory reliefs”, the target typology “youth” was classified by using the information both on the contribution type and on the apprenticeship: i) Apprenticeship for qualification and for professional diploma, ii) Apprenticeship or professional contract, iii) Apprenticeship with high education and research. The classification changes according to the evolution of labor policies regulation 3-The classification of education for the individuals-workers is the result of a procedure that integrates the education levels obtained at the 2011 Population Census with the Istat data base on Education Information (BIT) yearly updated with administrative sources. The information on education in Asia-employmentEducation is a hierarchic variable assigned to each individual-worker at two levels of classification. At first level, educational attainment is represented by 8 modalities, not availability is one of them: no formal education and primary school certificatediploma of lower secondary educationupper secondary school certificatediploma of upper secondary educationuniversity degree (2-3 years) old programme, first degree, first level academic diplomamaster's degree (second level - old and new programme) and second level academic diplomaresearch doctoral degreenot availableAt the second hierarchical level the following three first levels are classified into groups: diploma of upper secondary education, into 3 groups in addition to the not available mode university degree (2-3 years) old programme, first degree, first level academic diploma, into 18 groups such as AFAM first level academic diploma, university degree (2-3 years), master’s degree (3 years), in addition to the not available modemaster's degree (second level - old and new programme) and second level academic diploma, into 16 groups such as AFAM second level academic diploma, master’s degree ((second level - old and new programme), in addition to the not available modeIt should be underlined that while offering relevant information potential, the first and second level of education attainment do not have total coverage in the Register. "Unavailable" mode indicates the missing worker’s education due to a lack of information in the database.