Investigation into the causes of low occupational mobility of teachers in secondary education Occupational career, teaching task, legal position at school, teaching degree / job security / looking for other job / motives to throw up job at school / internal occupational mobility, wish for non-teaching tasks at school, actual non-teaching tasks done by respondent / wishes regarding r.'s career in the long run, feasibility of these wishes / experience of obstacles regarding terms of employment, internal situation at school, the labour market and personal circumstances / assessment of possible measures to create better opportunities for teachers / progress made last year in terms of job quality / r.'s readiness to make efforts / job satisfaction / importance of better opportunities. Background variables: basic characteristics/ household characteristics/ place of work/ occupation/employment