Peoplesoft HCM Relation between Job Actions and Effective Date.
Personnel actions that begin new stages of employment (hire, promotion, reassignment, transfer, disciplinary action, and pay rate changes) are effective
at the beginning of the business day.
Example: Employee gets promoted as of 15-Jan-2012. That means effective 15-Jan-2012, employee enters his new role.
Personnel actions such as removal and termination are effective at the end of the business day.
Example: Employee gets terminated as of 12-Aug-2012. That means employee last working day is 11-Aug-2012 and from 12-Aug he is no more with the company.