▁was ▁put ▁forward ▁in ▁ 1 9 5 8 ▁by ▁March ▁& ▁Simon . ▁After ▁this ▁model ▁there ▁have ▁been ▁several ▁efforts ▁to ▁extend ▁the ▁concept . ▁Since ▁ 1 9 5 8 ▁the ▁following ▁models ▁of ▁employee ▁turn over ▁have ▁been ▁published . ▁ ▁March ▁and ▁Simon ▁( 1 9 5 8 ) ▁Process ▁Model ▁of ▁Turn over ▁ ▁Por ter ▁& ▁Ste ers ▁( 1 9 7 3 ) ▁Met ▁Ex pect ations ▁Model ▁ ▁Price ▁( 1 9 7 7 ) ▁C aus al ▁Model ▁of ▁Turn over ▁ ▁Mo ble y ▁( 1 9 7 7 ) ▁Inter mediate ▁Link ages ▁Model ▁ ▁Hom ▁and ▁Griff eth ▁( 1 9 9 1 ) ▁Altern ative ▁Link ages ▁Model ▁of ▁Turn over ▁ ▁Whit more ▁( 1 9 7 9 ) ▁In verse ▁Gaussian ▁Model ▁for ▁Labour ▁Turn over ▁ ▁Ste ers ▁and ▁M ow day ▁( 1 9 8 1 ) ▁Turn over ▁Model ▁ ▁Sher idan ▁& ▁Ab el son ▁( 1 9 8 3 ) ▁C us p ▁Cat ast rop he ▁Model ▁of ▁Employee ▁Turn over ▁ ▁Jack of sky ▁( 1 9 8 4 ) ▁Integr ated ▁Process ▁Model ▁ ▁Lee ▁et ▁al . ▁( 1 9 9 1 ) ▁Un fold ing ▁Model ▁of ▁Vol unt ary ▁Employee ▁Turn over ▁ ▁Aqu ino ▁et ▁al . ▁( 1 9 9 7 ) ▁Refer ent ▁C ogn itions ▁Model ▁ ▁Mitchell ▁& ▁Lee ▁( 2 0 0 1 ) ▁Job ▁Em bed ded ness ▁Model