This employee is always on his initiative to consult others whenever he encounters a problem on his post, and is good at using his head.

该员工在工作期间遇到不懂的问题会主动向他人请教，并且善于思考。

youdao

He studies on his own initiative.

他学习很自觉。

《新英汉大辞典》

So, on his own initiative, he began meeting with his coach, Nancy Mercurio, about once a month.

他主动约见南希•墨丘里奥教练，大约每个月接受一次培训。

youdao

Satellite (Soran Ebrahim) is a boy of thirteen, but he has grown old before his time, and everybody in the village, adults as well as children, relies on his initiative.

NEWYORKER: Turtles Can Fly

The report also found that Jack Ruby, 53, who shot Oswald dead two days after the president's death at a Dallas police station also acted on his own initiative.

BBC: 28 September

And we have there the explicit instructions for the head of Bomber Command, if the Prime Minister's wiped out, and he can't find an alternative senior minister, the airman, on his own initiative, can launch retaliation.

BBC