Traveldocs.com can assist in obtaining a work permit for Afghanistan in either Washington DC or Los Angeles although the requirements and processing times differ slightly between the embassy and consulate we have comprehensive instructions on our website to assist you in making a difficult process as simple, as possible. 

Until recently the Afghan government preferred that work permits be issued once an applicant had arrived in Afghanistan on a business visa, now both the embassy and consulate will issue a work permit prior to arrival in the country. 
Please visit traveldocs.com Afghan homepage for more detailed visa instructions, fees and processing times.