I have a question about work instuctions. I know that they are a required part of ISO but no where that I can find states where and what departments should have them. I read that there are usually more work instuctions than procedures which is not the case at my place of employment. I have recently taken over the M.R. position. Two departments currently have work instuctions. Are all department required to have them? I know if they are not required there is a likely chance that they won't be written.