Netflix’s announcement last week that it would allow employees who are new mothers or fathers take unlimited paid leave in the first year after a child’s birth or adoption has created a renewed focus on the factors employers must consider to implement such benefits successfully and the real motivations for companies in doling out such incentives. The Netflix incentive covers about 2,000 full-time employees. The Los Gatos, Calif.-based Internet streaming media services company said the move is part of its effort to foster a culture of “freedom and responsibility” among its employees. “[It] gives our employees context about our business and the freedom to make their own decisions along with the accompanying responsibility,” wrote Netflix’s chief talent officer, Tawni Cranz, in a blog post .…