The evidence for determining the working hours includes not only the contract, but also the work card, attendance card, any materials in which you mentioned your name in the course of working in the company, such as the company's administrative documents, and the certificates of customers you came into contact with in the course of working.

As for how to prove how long you have worked, just prove two time points, and the middle is your working time. For example, if you have a piece of material to prove that you worked in February 2008 and another piece of evidence to prove that you joined the work in February 10, this time can prove that it is your working time.

He can't dismiss you casually, because according to the Labor Contract Law, if you don't sign a labor contract for more than one year, it will be regarded as signing an open-ended labor contract. At the same time, because you haven't signed a labor contract for more than one year, you have the right to ask for double salary 1 1 month, which means you can get 1 1 month compensation through arbitration or litigation. In addition, the compensation he has to give you for dismissing you is also a good compensation. If you don't understand, it is recommended to consult a lawyer. If it is from Yunnan, before there is no evidence, there are several law firms in Yunnan that receive free consultation. You can ask what evidence you need, and then decide whether to sue or hire a lawyer after obtaining the evidence.

After finding the evidence, I can tell you whether you need to hire a lawyer. Generally, there is sufficient evidence, and there is no need to hire a lawyer at the arbitration stage. If the arbitration fails, it is not too late to hire a lawyer.