She became stuck in a loop, trying to divine whether her jobs might be extended, and struggling to land another position since they usually weren’t. “I’d fix up my résumé all the time, and that’s your life,” Mrs. Sisco, 35, said.

“I was constantly looking for something else,” she added. “I was held back. There was no professional growth, and the earnings were low.”

Temporary employees are paid an average of 19 percent less than their permanent counterparts, according to Eurofound, the research arm of the European Union.

In November, she interviewed for hospital internships in New York. ‘‘At least there would be hope for the future,” she said.

Temporary work has become widespread in the United States, too, where the explosion of the so-called gig economy has made job-hopping the new norm for a growing pool of young workers. But the situation is verging on the extreme in Europe, giving the perniciousness of the problem the potential to play on an entire generation. Millions of people across Europe are searching for work amid jobless rates that are still nearly twice as high as in the United States.

Relocating would mean having to do a new five-year residency on top of her extensive training and experience. But the prospect of spending her career as a doctor doing temporary work was more than she could bear.

“When I started thinking of moving, I stopped thinking about what I was not getting,” said Mrs. Sisco, who hopes to be able to move her family and start a new life in the coming months.