Agency work is a specific form of employment. What is different here is that the temporary employment agency with whom you enter into a contract and the company in which you work (are assigned to) are not the same. The temporary employment agency itself has therefore entered into contracts with a range of different companies (hiring companies or hirers) to whom the employee will be assigned. Another specific feature is that the temporary employment agency will only assign you to a hiring company for a specific period of time. The periods for which you work for a hirer may vary significantly. The assignment may just be for a few days, but it may also be for a few months. This means that, as an agency worker from a temporary employment agency, you may be assigned to different companies for different periods of time and therefore work in a range of different companies.