Time-serving

And the man who had just been engaged in the most time-serving neglect of former, and a most cringing anticipation of new patrons, became forthwith the kind and hospitable host of strangers who had no claim upon him beyond their own isolated situation.

Source: wiktionary

Harding brought with him a timeserving pal from The Times called Keith Blackmore, who was equally a stranger to broadcasting.

Source: wiktionary