EXCLUSIVE: Unilever won't discuss blanket two-year global worker guarantee in McCormick deal, IUF says ↧ ↧ EXCLUSIVE: Unilever won't discuss blanket two-year global worker gu... Unilever "refuses to engage" with union body IUF over demands that a two-year employment guarantee agreed with European workers under its planned food business merger with McCormick ​be applied to all staff globally, the IUF said in a memo ‌seen by Reuters.