RT Article T1 Precarious work, insecure workers: employment relations in transition JF American sociological review VO 74 IS 1 SP 1 OP 22 A1 Kalleberg, Arne L. LA English YR 2009 UL https://krimdok.uni-tuebingen.de/Record/1625558937 K1 Arbeit K1 Ökonomische Lage K1 Sicherheit K1 Sozialer Wandel