6. Personnel expenses and human resources

    T 039
     
in € thousand 2014/15 2013/14
     
Wages and salaries 334,184 320,057
Social security, pension and other benefit expenses 97,111 95,088
     
  431,295 415,145
      
Prior-year figures have been adjusted (see Changes in accounting and measurement methods due to new standards and interpretations).

The pension expenses primarily comprise allocations to the provisions for pensions.

The average number of employees in the Group during the year was as follows:

    T 040
     
  2014/15 2013/14
     
Blue collar 4,013 4,037
White collar 2,052 2,047
Trainees and apprentices 252 253
     
  6,317 6,337
      
Prior-year figures have been adjusted (see Changes in accounting and measurement methods due to new standards and interpretations).