ThyssenKrupp Nirosta on short hours until September. ThyssenKrupp Stainless plans to introduce short-time working for its German operations until September. The reduced working schedule has taken effect as of February, and applies to the 4,500 employees of German stainless strip division TK Nirosta. Currently, 2,300 staff are working six fewer shifts per month, though the tonnage lost is not yet known. Nirosta already reduced production by extending its Christmas/New Year break from two to four weeks.