Conwert Immobilien Invest said on Monday it is making 50 staff redundant as part of a programme to optimise costs and increase efficiency. The company is seeking to reduce general administration expenses by around 10-15% this year and to reduce total costs to 11-12% of revenues in 2009, from 14% in 2008. The layoffs are affecting around 10% of Conwert's total staff of 530.