Glossary of key employment terms

Early intervention: an approach that aims to make services accessible as early as possible to clients who have acquired a disability, employees with physical and coping disabilities or even unemployed people, to create a suitable and tailored rehabilitation programme to reintegrate them in the labour market. For more information search for "Early Intervention"
Individual Placement and Support (IPS): a specific supported employment-type model that involves intensive individual support, a rapid job search followed by placement in paid employment and in-work support for both the employer and employee for an unlimited period of time. It is historically focused on supporting people with severe mental health issues, but increasingly used with people with other support needs. For more examples, search for IPS.
Quotas/quota system/quota policy: a system which establishes a minimum percentage of persons with disabilities that should be employed. Being determined at national level, quota systems differ greatly across countries in terms of the percentage set, the sectors they apply to (public or private, or both) and the beneficiaries. It can be compulsory or voluntary. For more information search for quota.
Supported Employment: a model which provides support to persons with disabilities or other disadvantaged groups to achieve sustainable long-term employment and businesses to employ valuable workers and maintain paid employment in the open labour market. It is based on the principles of individuality, paid work, inclusion within the open labour market and ongoing support. See separate article on SE as well.
Work Integration Social Enterprise (WISE): a specific type of social enterprise that aims to integrate workers with support needs into work and society through productive activity and pay them a salary that is equal or at least comparable to that of other workers. WISEs can have very different modus operandi and pursue different integration models, ranging from the creation of sustainable permanent jobs for workers disadvantaged in the open labour market to transitional occupations that provide work experience and on-the-job training with a view to supporting inclusion in the open labour market, or a mix of the two. 
Mainstream or open labour market
In English the term "1st labour market" or "2nd labour market" are not used. An employment setting that is not mainstream can be called sheltered or segregated.