Some H1B employers post it at their head office irrespective of the actual home address (work location) of the employee. This is acceptable and a recommended practice. This is true even if the worker's home is located in a different state/city altogether. If not posted at the employer's headquarters, the LCA should be posted on the main door or at two separate locations inside the employee's home i.e. the work location. The primary location can be shown as your Home address. The house office can also be the ONLY work location. You can have multiple work locations in your H1B application including both home and office addresses.