Introduction Data We use administrative data from German Social Security records These contain a calendar of all jobs with start and end date excluding civil service job They report the average daily wage either over the year or part thereof when a job change occurs. No averaging across jobs. They also report periods in apprenticeship because these are jobs-albeit very low paidIntroduction Data • We use administrative data from German Social Security records • These contain a calendar of all jobs with start and end date excluding civil service job • They report the average daily wage either over the year or part thereof when a job change occurs. No averaging across jobs. • They also report periods in apprenticeship because these are jobs – albeit very low paid