实干 carries strong positive connotations in Chinese workplace and political rhetoric — it's the opposite of
空谈 (kōngtán, 'empty talk') and
形式主义 (xíngshì zhǔyì, 'formalism'). The phrase
实干兴邦,
空谈误国 ('honest work builds a nation, empty talk ruins it') is a well-known political slogan associated with Xi Jinping. The agentive form
实干家 (shígànjiā) means 'a doer / person of action'.