Do flexible working hours have positive or negative impact on employee turn over

Do flexible working hours have positive or negative impact on employee turn over

I need a theoretical underpinning for work title “Do flexible working hours have positive or negative impact on employee turn over” use theories like Maslows hierarchy of needs to support flexi work time, use illustrations accordingly, – use 3 power point slides + 1 for referencing – Harvard referencing system preferred (very important)