The leave issue is as per individual company policy and it varies from company to company. As per the factory laws, you have to give one leave for every 20 days worked by an employee. However, almost all companies give certain days of CL, SL, and PL as part of their employee welfare and derive certain policies for availing these leaves. Certain companies do not allow employees to take any leave during their probation period, while certain companies like ours allow CL & SL on a proportionate basis to any employee from day one of their joining. However, PL is given only after completion of probation. As such, I suggest giving CL or SL on a proportionate basis to employees who join from day one. This is one of the best HR practices.