Industry watchers said the increase came as employees refrained from switching their jobs as Samsung has emerged as one of leading technology firms and is recognized around the world.

"As the company's overall reputation, pay, and working environment improves, employees tend to stay on longer," a Samsung official said.

Samsung Electronics' annual operating profit came to 8.05 trillion won ($7.13 billion) in 2005, but it hit a whopping 29.2 trillion won in 2016.

The gap between male and female employees in terms of service years also decreased. While men and women worked at Samsung for 7.7 years and 3.5 years on average, respectively in 2005, the gap reduced to only 2.2 years in 2016.

As for average annual paycheck, male workers earned 116 million won annually last year, while women received 81 million won. (Yonhap)