I just recently wrote an article about this topic for a college report, Ill break it down to the meat and potatos of it though. It depends greatly on the job that you are looking for and the level of comfort that you want to have everyday. I know that in a physical labor job such as a warehouse employee or a builder or something like that it does not matter, however if you want to work in an office and not be in a dark back room of some IT company you may want to keep them easially covered. There is always the option of ending an arm piece above the writs but you would still have to wear something long sleeved everyday and this can be uncomfortable. While tattoos have became more mainstream in the past couple years you have to realize that some people just do not like them and will turn away from a business if you have something no matter how artistic it is. Thats just the short and curlys of it, so plan accordingly.