4. Address unconscious bias In 2018, Unilever started a partnership with Professor Iris Bohnet at Harvard University to develop a scientific approach to tackle unconscious bias. Through that they introduced a metric called the gender appointment ratio, which tracked recruitment data. Line managers were made aware of the ratio to improve awareness around their hiring decisions and help them make better, unbiased choices. 5. Offer better support to new parents In 2018, Unilever rolled out generous global paid parental leave policy — 16 weeks for mothers and three weeks for new fathers.