The term 'oil and gas' is a general one that refers to the energy resources, both renewable and non-renewable. The world's oil supply has been rapidly declining over the last decade, while demand has continued to rise. This means there is more pressure than ever on companies operating in this industry to ensure they are making every effort possible to protect their workers from injury or harm when at work. There are various courses available for those working in this industry including online courses which can be completed anywhere with an internet connection. These have become popular as people can study them in their own time outside of normal work hours without having to take time off work or pay expensive fees for attending classes.