The UK's unhappiest jobsElectrician. Average salary: £25,000 – £40,000. ... Psychiatric aide (hospital) Average salary: £20,000 – £30,000. ... Social worker. Average salary: £25,000 – £30,000. ... Construction worker (labourer) Average salary: £20,000 – £30,000. ... Warehouse manager. ... Night cleaner. ... Video game quality tester. ... Hospital security.