You hire a lawyer for a reason: because you need his/her expertise in handling the types of charges you are faced with. However, this doesn’t mean the client and attorney will see eye to eye all the time. Assuming that a client’s decision is neither unethical nor illegal ('My decision is that you should bump off the prosecution witness”), the lawyer is the client’s agent and must either carry out the client’s decision or convince the judge to let him withdraw from the case. Client should expect lawyers in such circumstances to prepare documents which explain that the client voluntarily chose to ignore the attorney’s advice. The lawyer will do this to protect against later claims of incompetence.