trudoljubiv, marljiv angolul

hardworking▼(taking their work seriously and doing it well and rapidly, see also: industrious)
adjective
[UK: hɑːd.ˈwɜːkɪŋ] [US: ˈhɑːr.ˌdwərkɪŋ]

industrious▼(hard-working and persistent)
adjective
[UK: ɪn.ˈdʌ.strɪəs] [US: ˌɪn.ˈdə.striəs]