Most donkeys, mules and hinnies around the world are located in low- and middle-income countries and are used for work, supporting millions of households. Equids can be used for a variety of purposes for which they often require different types of work equipment. This may range from riding tack, such as riding saddles and bridles used for personal transport, sports or showing events, to harnesses used to pull carts and agricultural implements, or sawbucks used to carry loads without the use of a vehicle. In this chapter, we will define work equipment as the different types of harnesses and implements used for work, where the term harness refers to the equipment in direct contact with the animal. Although the specific equipment needed by the donkey or hybrid will depend on the type of work performed and on the animal’s conformation and body condition score, certain key principles and design features apply to all work equipment. Respecting these principles allows the animal to work comfortably and efficiently, and helps prevent injury to both the animal and user. In working equids throughout the world, harness-related wounds are extremely common and represent a serious welfare concern. Understanding key concepts of equipment design, fit, maintenance and use can help reduce the incidence of these largely preventable wounds. In addition, adequate work practices that respect the animal’s physical and psychological limits are essential to safeguard animal welfare, and should therefore be understood by owners, veterinarians and others working with these equids. This chapter discusses basic concepts of pulling or carrying loads, common types of harnesses, as well as common clinical presentations associated with work equipment. It aims to provide practical advice on how to recognise important features of work equipment and to equip those handling working equids with the knowledge they need to make recommendations and prevent equipment-related problems.