Related Clues:

• Sidewalk Santa, e.g.
• Fill-in at the office
• ER stat
• Agency employee
• Roustabout, e.g.
• Crunch time call-in
• Interim office worker (Abbr.)
• Intern, perhaps
• It may be measured in F. or C.
• Work short-term
• Worker over the Christmas vacation, perhaps
• Manual worker
• Short-term worker, in short
• The way to give 22 across a start, but but not for keeps, in short
• Seasonal worker, say