In the past, most organizations considered at least the first three months to be a “honeymoon” period where new leaders absorbed the business and navigated the company culture. This seems to have shifted, particularly among the Fortune 100. A senior HR executive at a major automotive manufacturer recently summarized her view on the acculturation period for new leaders: “My honeymoon period for this job was, at best, two weeks. Our expectation is that we hire leaders and expect them to come in and make an immediate impact.”