The police chief in Bauchi state told AFP news agency six staff were seized, two of them expatriates, working for Lebanese-owned firm Setraco.
A security guard was reportedly killed.
No-one has admitted the abductions but the Islamist militant group, Boko Haram, has staged a series of attacks in northern Nigeria.
According to an Associated Press report, as many as seven foreign workers were seized.
One local official told AP the workers were from the UK, Italy, Greece and Lebanon. However, a UK foreign office spokesman could not confirm the report and said inquiries were being made about the incident.