Table 1
General characteristics of respondents participated (N = 150)

Characteristics		Frequency (N)	Percent (%)
Gender	Male	102	68
	Female	48	32
Age	20-29	70	46.7
	30-39	50	33.3
	40-49	30	20.0
Educational background	≥College diploma	88	58.7
	University degree	62	41.3
Income per month (million won)	<2	44	29.3
	<2.5	38	25.3
	<3	53	35.3
	≥3	15	10.0
Size of processing facilities	Large-scale	40	26.7
	Small and medium-scale	110	73.3
Service period (yrs.)	<1	85	56.7
	3-5	13	8.7
	5-10	52	34.7
Position	Employees	2	53.3
	Team manager	42	28
	Assistant manager	26	17.3
	President, CEO	80	1.3
Total		150	100