Persons in the Netherlands with data on their employment history in the past 4 years.

The source from which a person-identifying number was derived.NL

In most cases the source of the person ID is the Municipal Personal Records Database (GBA).NL

This number identifies a natural person. It is a number without meaning or dimension.NL

In most cases this is a conversion of the A-number from the Municipal Personal Records Database (GBA). Because the A-number is highly identifying, for use within CBS (including keeping person-related information unique and linking registers) it is replaced by RinPersoon. RIN stands for Record Identification Number. By sufficiently removing or recoding the data linked to a RINPERSOON, it is in practice impossible to attribute a RinPersoon to a specific person. CBS converts A-numbers to RinPersoon.NL

Together with the indicator for the origin of the person ID, this number identifies a unique natural person.NL

The working hours of a person's paid work.NL

For persons, it is established per month whether they worked and belong to the GBA population. In the classification by duration of work, persons with 47-48 months of work are regarded as continuously employed. The one month without work is usually a voluntary holiday between two jobs. If the one month was involuntary, the fact that this period lasted only one month proves that the person's wishes and competences match well in supply and demand on the labour market. The reason for counting 47 months as 48 months is that this amounts to virtually continuous work. For this reason, persons who do not work precisely in the last (most recent) month are not classified as continuously employed. After all, for these persons it is not known whether they will have work again a month later. These persons are therefore classified in the category employed for more than 3 years in the past 4 years but not continuously employed. Using the components SECM, it has been determined whether a person was employed in the reporting month. Subsequently, for the 47 preceding months it was determined whether he/she was employed and belonged to the GBA population at the end of the month. Persons are then classified on the basis of the number of months with paid work. Persons with work in the reporting month and at least 46 of the 47 measurements before it count as continuously employed. Otherwise persons are classified on the basis of the number of months of work. For part of the research population, he/she was not observed in all 48 months. For this population, the classification into continuously, partially and never employed has been done on the basis of the share of observed months. Persons who belonged to the GBA for 48 months are subdivided into: 1 Continuously employed (if employed in the last month and at least 46 of the 47 months before) 2 Employed for more than 3 years but not continuously in the past 4 years 3 Employed for more than 2 years in the past 4 years 4 Employed for more than 1 year in the past 4 years 5 Employed from at least 1 month up to and including at most 1 year in the past 4 years 6 Not employed in the past 4 years Persons who belonged to the GBA for less than 48 months are subdivided into: 7 Continuously employed if employed in the last (=reporting) month and at least 96% of the observed months; in concrete terms this means that persons with fewer than 25 observations only fall into this category if he/she worked all observed months. For persons with 25-47 observed months, the person may not work for at most 1 month to still be classified as continuously employed. 8 Employed in more than 3/4 of the observed periods (but not continuously) 9 Employed in more than 2/4 of the observed periods (but not continuously) 10 Employed in more than 1/4 of the observed periods (but not continuously) 11 Employed from at least 1 month up to at most 1/4 of the observed periods 12 Not employed in the observed periodsNL

The number of months ago that a person had work.NL

Using the component SECM, it has been determined whether a person is employed in a specific month. For all persons, it was determined in which month the person was for the first time employed, counting back from the reporting month up to a maximum of 48 months back. If a person is employed in the reporting month, there is therefore no period without work. A person can be without work for at most 4 years. 1 0 months not worked (=employed at reference date) 2 1 month not worked 3 2 months not worked 4 3 through 5 months not worked 5 6 through 11 months not worked 6 At least 1 year not worked 7 At least 2 years not worked 8 At least 3 years not worked 9 At least 4 years not workedNL

The length of time a person is employed.NL

Using the component SECM, it has been determined whether a person is employed in a specific month. For all persons, it was determined in which month the person was for the first time no longer employed, counting back from the reporting month up to a maximum of 48 months back. For the period of continuous employment, an interruption of at most one month also counts (the month preceding the first month without work in which the person is not employed). Otherwise the period is determined up to the next month without work, up to a maximum of 48 months. A person can be in continuous work for at most 4 years. 1 0 months employed (=person is not employed at reference date) 2 1 month employed 3 2 months employed 4 3 through 5 months employed 5 6 through 11 months employed 6 At least 1 year employed 7 At least 2 years employed 8 At least 3 years employed 9 At least 4 years employedNL