South Korea's 10 biggest companies have contributed less to the nation's employment sector, although their assets have grown, data showed Sunday.

According to the data compiled by market researcher Chaebol.com, their assets totaled 1,144.4 trillion won ($1,000 billion) last year. This accounts for 27.22 percent of all assets for local firms.

The "big ten" firms' combined assets have continued to rise from 1,012.4 trillion won in 2012, to 1,067.8 trillion won in 2013 and 1,108.4 trillion won in 2014.

The aggregate assets of the top four conglomerates -- Samsung, Hyundai Motor, SK and LG -- came to 772.4 trillion won, or 18.37 percent of the total.

But the 10 major business groups' contributions to the employment market have fallen.

They had a total of 929,999 employees at the end of 2015, making up 3.59 percent of 25.9 million jobs in the country, a figure released by Statistics Korea showed.

The ratio of workers at Samsung dropped to 0.98 percent last year from 1.04 percent a year earlier, while that of Hyundai employees inched up to 0.63 from 0.6. (Yonhap)