Problems in filling vacancies and participation in continuing training
According to the results of the 2011 BIBB Training Panel, 57 percent of companies in Germany carried out continuing training measures in the year 2010.2 Since the aim of the present paper is to investigate the correlation between company-based continuing training and personnel recruitment, account will only be taken of companies which recruited new staff or wished to recruit new staff to the company in 2010. The rate of participation in continuing training by these companies was 68 percent.

The Figure shows the continuing training participation of these companies according to the magnitude of problems experienced in filling vacant positions - measured in terms of the extent of unfilled vacancies. This reveals that participation in continuing training by companies with major problems in filling vacancies (55.1%) is very much lower than participation by companies which have no problems or only slight problems in filling vacancies (69.9%). Company-based continuing training does not thus appear to be an instrument which can compensate for problems in filling vacancies. In fact, if the two groups of companies with the lowest and greatest problems in filling vacancies are contrasted, higher participation in continuing training by companies is shown to be accompanied by successful recruitment of new staff.
In order to examine this correlation more precisely, a multi-variate model is used to investigate whether an effect between the extent of problems in filling vacancies and participation in company-based continuing training can be statistically demonstrated if additional explanatory factors are introduced onto the model. The table presents the results of a logistic regression (cf. "Binary logistic regression"). Information provided by the companies surveyed on whether continuing training measures were implemented or not implemented in 2010 serves as the dependent variable.
Binary logistic regression
A binary logistic regression is a multi-variate analytical procedure which expresses the influence of factors on a dependent variable in terms of probabilities. A positive influence compared to the respective reference group is indicated if the value shown is greater than 1. A negative effect is indicated if the value is between 0 and 1.
The first point which should be emphasised is that the findings of the descriptive evaluation are confirmed and that it is possible to identify a negative correlation between recruitment problems and participation in company-based continuing training. Companies which have major problems in finding workers on the external labour market do not come to the conclusion that they should invest in the continuing training of their employees. Instead of this, the recruitment of new employees exerts a positive effect on companies' continuing training participation. Continuing training measures for the induction of new employees, which represent an obviously worthwhile investment in company-specific human capital from a company perspective, are likely to play an important role in this regard.
In addition to this, the results largely confirm the expected effects of further influencing factors on participation in company-based continuing training. The training needs perceived from the point of view of the companies surveyed are shown to be highly significant as well as exerting the strongest effect in overall terms on participation in continuing training. As requirements increase, there is a significant rise in the probability that companies will provide continuing training to their employees. Financial and organisational incentives to raise employee motivation such as performance-related pay, target setting agreements or profit sharing also have an extremely positive effect on company-based continuing training. The explanation for this is that such company instruments for the raising of employee motivation mean a greater level of demand for continuing training opportunities on the part of the employees to which the company reacts by increasing its provision.

Further important determinants of continuing training are company size, participation in training and the qualifications structure of employees. This confirms the results of comparable studies (cf. BELLMANN/KREKEL/STEGMAIER 2010; DÜLL/BELLMANN 1998). The fact that companies providing training are more likely to offer continuing training than companies not providing training may be interpreted as the expression of a specific training culture within the company which dictates that an investment is made in training in order to acquire and secure skilled workers. The investigation into the influence of the company qualifications structure leads to the result that companies with a high proportion of employees not in possession of a vocational qualification are more likely to be inactive in terms of continuing training, whereas a high proportion of employees with an academic qualification strongly increases participation in continuing training. This once again confirms the conclusion that "company-based continuing training is characterised by strong selection and segmentation with regard to qualifications, and this tends to lead to a consolidation or enlargement of existing inequalities rather than a reduction" (cf. BRUSSIG/LEBER 2004, p. 49).