 For years Oldham 's economy was heavily dependent on manufacturing industry , especially textiles and mechanical engineering . Since the deindustrialisation of Oldham in the mid @-@ 20th century , these industries have been replaced by home shopping , publishing , healthcare and food processing sectors , though factory @-@ generated employment retains a significant presence . Many of the modern sectors are low @-@ skill and low @-@ wage . 
 For years Oldham <a href='null_genetive' title='1'><mark>'s</mark></a>economy was heavily dependent on manufacturing industry , especially textiles and mechanical engineering . Since the deindustrialisation of Oldham in the mid @-@ 20th century , these industries <a href='been_done' title='2'><mark>have</mark></a> been replaced by home shopping , publishing , healthcare and food processing sectors , though factory @-@ generated employment <a href='uninflect' title='3'><mark>retains</mark></a> a significant presence . Many of the modern sectors <a href='drop_aux' title='4'><mark>are</mark></a>low @-@ skill and low @-@ wage . 
For yrs Oldham  economy was heavily dependent on manufacturing industry , especially textiles and mechanical engineering . Since the deindustrialisation of Oldham in the mid @-@ 20th century , dese industries done been replaced by home shopping , publishing , healthcare and food processing sectors , tho factory @-@ generated employment retain a significant presence . Many of da modern sectors low @-@ skill and low @-@ wage .