What is the meaning of white collar and blue collar workers?

White collor is more towards office jobs

Blue-collar workers perform labor jobs and typically work with their hands.

White-collar workers usually perform job duties in an office setting. They are highly skilled and formally trained professionals.

White collor: Senior or Supervisory level staff.

Blue collor: Junior or worker level staff.

White collar - Someone who is typically working in the office . They would be professionals normally in charge of managerial , administrative and supervisory type of activities. 

Blue collar - Someone who works in an industry , manufacturing , construction site etc. They can be either skilled or unskilled workers. They are usually denoted to mention manual workers. 

White collor: Executive level staff.

Blue collor: worker level staff.

The terms "blue collar" and "white collar" are occupational classifications that distinguish workers who perform manual labor from workers who perform professional jobs. Historically, blue-collar workers wore uniforms, usually blue, and worked in trade occupations. White-collar workers typically wore white, button down shirts. and worked in office settings. Other aspects that distinguish blue-collar and white-collar workers include earnings and education level.

Blue-collar workers perform labor jobs and typically work with their hands. The skills necessary for blue-collar work vary by occupation. Some blue-collar occupations require highly skilled personnel who are formally trained and certified. These workers include aircraft mechanics, plumbers, electricians and structural workers. Many blue-collar employers hire unskilled and low-skilled workers to perform simple tasks such as cleaning, maintenance and assembly line work.

White-collar workers usually perform job duties in an office setting. They are highly skilled and formally trained professionals. Many white-collar workers, such as accountants, bankers, attorneys and real estate agents, provide professional services to clients. Other white-collar workers, such as engineers and architects, provide services to businesses, corporations and government agencies.

Blue coller job performer are those who perform technical jobs like Engineer while white coller job performers are those who work in office like Accountant, etc.