Motifs of employers to use flexible constuctions for employment in their business. Type of business / number of working hours in full-time working week / number of employees with full-time contract and part-time contract / employees working at home / use of temporary workers, callable employees, outworkers, free-lancers, employees with a temporary employment contract / fluctuations in production or service, predictability of fluctuations / indexed production of month with lowest production and best month / maximum and minimum number of employees at work / use of part-time employees, employees with a temporary employment contract, temporary workers, callable employees in the period of 1985-1988: percentage of lower skilled work/ pro and contra, expectations of change in use / parts of production process are put out: frequency, pro and contra, expectations of change in put outs / overtime hours / availability of personnel for other tasks by changes in job descriptions, schooling / characteristics of business: establishment is part of concern, changes in number of annual working hours, expenses on salaries, annual turnover. Background variables: residence