I learned a new word today from David Millward and Steven Swinford, "BAA 'refused offers of help clearing snow'", The Telegraph 12/21/2010:
Another senior airline executive added:"Airlines were getting frustrated at stands not being cleared. They said let's do it, we will do it ourselves and BAA said no, they would not let airlines do their job for them. They were being jobsworths about it."
The OED's gloss:
Brit. colloq. (depreciative). A person in authority (esp. a minor official) who insists on adhering to rules and regulations or bureaucratic procedures even at the expense of common sense.
I'm puzzled that this useful word hasn't made it across the Atlantic. One issue may be that we don't really have the fixed expression that it's based on, "Sorry, I can't let you ___, it's more than me job's worth", meaning "I'd lose my job if I let you do that".