In a study released Thursday, CareerBuilder said 46 percent of all jobs added to the economy since 2010 have been low-wage paying, while 29 percent have been high-paying jobs.
Meanwhile, only 25 percent of the positions added during the economic recovery have been middle-range wage paying jobs, which are defined by CareerBuilder as positions that pay between $13.84 and $21.13 per hour.
"This is further indication of a hollowing effect economists have warned about, where middle-wage jobs are thinning out -- creating a greater concentration of either high-wage or low-wage positions," said Matt Ferguson, chief executive officer of CareerBuilder.
Despite the split between low and high-range incomes, there are some mid-range jobs that have been "stable and growing at a healthy pace," Ferguson said.
A study conducted by Economic Modeling Specialists International, an employment research firm owned by CareerBuilder, found various positions on the rise with mid-range pay.
Often these positions require on-the-job training or some course work at a community college, CareerBuilder said.
CareerBuilder said that customer service representatives, with a median pay of $14.91 per hour, have risen 6 percent since 2010. Tractor trailer driver jobs with a median pay of $18.41 per hour have risen 7 percent since 2010.
With 38 percent growth -- adding 16,690 jobs since 2010 -- CareerBuilder said oil, gas and mining service unit operators have a median pay of $20.16 per hour.
Machinists positions have grown 14 percent since 2010 with the addition of 49,906 positions. The median pay for a machinist is $19.01 per hour, the study found.
Other mid-range paying jobs on the rise include welders cutters, solderers and brazers, bookkeepers and accounting and auditing clerks, construction laborers and medical assistants, CareerBuilder said.
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