Is it permissible for an employee to take their entitlements, such as travel allowance and accommodation fees, from the employer without his knowledge, given that the state law stipulates the employee's right to that, while it was not included in the contract and the employer later refused to pay them?

Contracts are the law of the contracting parties, and labor law serves as a recognized custom unless the contract stipulates otherwise. Regarding what was mentioned about labor law granting the worker travel allowance, accommodation fees, and the like, pursue legitimate means to obtain these rights, and do not take the employer's money without his knowledge.