Following overdose music producer, born in Sultanate, finds fixer (3-3,3)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

OD (short for overdose) + DJ (someone who plays music), then B (abbreviation for born) in OMAN (a Sultanate in the Arabian Peninsula). Odd-job man = a general maintenance worker who fixes things, rather than a specialist in a particular trade.