Work instructions refer to written guidelines that specify how someone should carry out a task. In physical product development, work instructions often detail the steps involved in manufacturing a product, assembly, or another type of process. For example, a work instruction for assembling a bicycle might include a list of the tools and materials needed and specific instructions on how to put the bike together. Work instructions are a vital part of any product development project. They help ensure that all team members are clear on what needs to be done and how they should do it. By having clear and concise work instructions, teams can work more efficiently and avoid errors that can cause delays or wasted resources. In addition, well-written work instructions can be used as a training tool for new team members, making it easier for them to get up to speed on the project's specifics.