Income from part time work done from home

Kindly clarify the following situation for tax calculation. I am a senior citizen having pension and bank interest income and a tax payer. Recently some one offered me to do a part time job from my home and shall pay me based on my work done on weekly / monthly basis. Should this income be treated  as salary or other sources or income from proffession for tax calculation purpose.

Thanks in advance

GR Babu