Hospitals are using gig work apps to fill nursing shifts.While lucrative, many of the shifts can be difficult and stressful for nurses.Three nurses who have used the apps explain how much they've earned and what they've experienced.Nurses are using gig apps to make money. Doing so often involves working some of the most stressful jobs in nursing.Some hospitals have trouble retaining full-time staff because they have a stressful work environment. That could be a trauma center, for instance, or a facility with many homeless patients who aren't getting support for chronic conditions, one nurse who picks up shifts for CareRev in Southern California, told Business Insider.The problem has been compounded in the years since the pandemic, with many nurses feeling overwhelmed and considering a career change. Private-equity-owned facilities looking to reduce costs have also driven the rise of these apps, a report summary from the Roosevelt Institute released last month says.One solution that hospitals are using is apps that allow nurses to pick up shifts similar to the way that Uber drivers claim gigs driving people to the airport. Apps like CareRev, ShiftMed, and Clipboard Health pitch themselves to medical facilities, including those with staffing problems."We are that emergency help that they need to keep their hospital going," the nurse in Southern California said. The nurses who spoke to BI asked that their full names not be published for fear of retaliation from the apps, but BI has verified their identity and work.CareRev, Clipboard, Medely, and ShiftMed did not respond to requests for comment from BI.Nurses often find themselves 'thrown into' gigsOne nurse in California who has used the apps CareRev, Clipboard Health, and Medely said that many hospitals in her area that offer work through the apps don't appear to have the resources to hire as many full-time nurses as they need."Well-known hospitals like the Mayo Clinic are probably not going to be using ShiftMed," the nurse said. "It tends to be kind of smaller facilities and less-funded facilities."At some facilities that use gig apps, nurses working through the apps can outnumber employees. At one intensive care unit where she has worked, the nurse in Southern California said, "There were eight of us, and seven didn't actually work there.""When I go to these hospitals, especially some of them, you'll see only the app people and some travel nurses, and that's it," she said.What orientation those hospitals provide to nurses who work there through the apps can affect the kind of care patients get."Every hospital has policies and procedures when they do things and we don't get training," the nurse in Southern California said. "We can read the booklet real fast in the morning, but we don't always know we're doing our best.""There are instances where you get thrown into something and you do the best that you can, and care can unfortunately suffer because of that," the nurse on three apps in California told BI.Sarah, a nurse in Wisconsin, said that most hospitals she's worked in have required workers hired through the apps to have at least one year of nursing experience. However, she said stepping into a new hospital with limited training can be challenging and that this level of experience might be insufficient."You have to have a solid foundation this is not the environment to build your skills," she said. "You really have to be solid."Challenging nursing gigs often come with higher payDespite the challenges that come with these gigs, Sarah said the pay motivates many nurses to give them a shot."Everybody wants to chase the money," she said.While the hourly rates for these gigs vary by hospital, the nursing role, and other factors, nurses told BI that they often pay roughly double what they make in their regular nursing jobs as much as $115 an hour.Sarah said that $75 an hour is a fairly standard rate in her experience which would earn her $900 over a twelve-hour shift."What I'm making in CareRev is about double what I would be paid as a staff nurse for the hospitals in this area," she said.The nurse in Southern California said that she considers roughly $90 an hour to be a typical hourly rate. That's compared to the roughly $80 an hour she estimated that a very experienced nurse would make at a large hospital in her area."I've seen it get to $114 on a holiday like Christmas," she said.The nurse on three apps in California said she earns between $30 and $40 an hour at her main nursing job but often makes between $50 and $70 an hour through gig apps."If you're just picking up shifts on your own through these apps, it's more profitable to do it that way," she said.Are you a nurse who works as an independent contractor and has a story idea to share? Reach out to this reporter at abitter@businessinsider.com