JamesNoBrakes

Impossible to say. Some HR departments may be overloaded. Some hiring managers may have lots of candidates and responsibilities/duties in between selecting new employees, in other cases they may have already made a selection and it unfortunately wasn't you. Sometimes the hold up is HR figuring out what grade they should make you an offer for, sometimes there significant safety priorities that "stop" almost everything else in the office for a while. The only way to know is to call. It's usually not a bad thing to call if you know who the hiring manager is. The official offer comes from HR though and managers are usually not allowed to tell you or anyone else who is hired until that offer goes out (manager tells HR who they've selected, HR sends out letter). HR usually tries to call you. They also do a background check before making a firm offer, so sometimes that boggs down the process. Good luck.