Do You know of any instruments to measure perspectives, forecasts or predictions of employment in companies? I know Manpower Group Employment Outlook Survey, but I look for similar research.
I would look at the duration of unemployment literature and the statistics that it cites. If you can determine the expected length of a completed spell of unemployment in weeks, its reciprocal (assuming the probability of escape from unemployment is constant) is the probability per week of getting a job. Note: what is usually measured as "duration of unemployment" is not the mean length of a completed spell but the mean length of incomplete spells as of the time of the survey.
There are several 'tools' to measure employability including My Vocational Situation and the CareerEDGE Profile. However these can be costly to get hold of and not all parts of the method are available. In my work on employability we developed our own method for 'measuring' employability, specifically the students perception of their own employability and confidence in gaining graduate employment. The results of this are in review for publication but preliminary findings can be found in my publication 'A Crisis of Confidence: Seven perceived Barriers to Graduate Employment' available to download through researchgate.