Checked both images and I'm sure the occupation box is clear in both cases :-

1901
Delia Coombs abt 1855 Clements End, Gloucestershire, England Wife [No occupation] West Dean Monmouthshire

1891
Delcia Coombs abt 1853 Clement End, Gloucestershire, England Wife [No occupation] West Dean Gloucestershire

Public worker suggests someone working for the Parish or Workhouse.

The Salvation Army evolved in the period 1865 - 1880 from Booths methodist Missions in East London