This  research  was  the  participatory  action  research. The  objectives  of  this  research were 1) to  study  the working environment?s problems 2)  to develop strategy  for  improving  the  working  environment?s  problems  and  3)  to  compare  the  working environment  of  before  and  after  using  the  strategic  implementation. The  implementing  factory  was O.Choke  Paisarn  Krapaothai Co.Ltd. located  in  Samutprakarn Province during December 2007 ? September 2008. An owner and forty-two workers were participated in all of steps of this research.
	The  main  of  research  methodology  consisted  of  1)  walk?through  survey form  by using the WISE checklist  of  8  technical  contents  amount 12  items  2)  problem  causative  analysis  of  the  working environment?s problems  3)  strategic development  and  4)  evaluative  the  implementation.
	The  results  had  shown  that  working  environment  of  O.Choke  Paisarn  Krapaothai  Co.,Ltd. was  improved  in  many  dimensions  following  of  8  technical  contents  of  WISE  Technique: 1)  Materials storage  and  handling; material  filling  management  storage  techniques  for  reducing  space  costs. 2) Work ? station design; providing  the  working  chairs  that  were  designed  suitable  for  individual  working  posture. 3)  Productive  machine  safety; the  belt  guard  covers  were  set  for  safety  4)  Control  of  hazardous  substance; providing  the  standard  container ? closure  of  glue  for reducing  the  solvent  evaporation, and  installing  the  ventilators  for  ventilation  of  working  area.  5)  Lighting; the  windows  were  reconstructed  to  be  the  window  light. 6)  Work ? related  welfare facilities; providing  the  personal  drinking  glass. 7) Work  premises; reconstructing  the  ground  factory  floor, filling  the drainage  ditch, installing  the  fire  extinguishers  and  keeping  the  electrical  wire on  the  ceiling  in  order  to  safety.  8)  Work  organization; providing  the  hand  trolleys  such  as the  sack  hand  trucks  for  transporting  the  heavy  sacks  in  stead  of  carrying  on  the  shoulder. 
 	The important strategies used for improving the working environment were 1) participation 2)  motivation  and  3)  education.
