Possible Duplicate:
When should I ask for more money in conjunction with more responsibility?

This happens very often in many companies. I think I'm at a very early stage of my career and I'm still unsure how should react to this scenarios.

Say you are a developer on a team of 4 members, your manager is busy most of the time dealing with other stuff as he has more teams or other activities, hence he struggles to give the dev team enough of his time. He talks with a member and offers him to move him to a "lead developer role". This implies the member will start managing the team in all administrative aspects, coordinate the development BUT still be coding. Although this represents career development at the moment your salary will remain the same. Of course (like everywhere) you are promised that if you do good you might get an official position and get a raise.

I basically see two options here:

• Accept more responsibilities knowing you are basically doing this for no addition pay but it will help you to gain experience
• Deny the offer. You are already doing hard work. That's why they chose to give you the extra responsibility.

When should I choose the first option, to accept the responsibility without additional compensation?