You're (presumably) being paid for 5 days a week at 8 hours per day. If you cannot manage your time reasonably within this period, consider doing some research

You're (presumably) being paid for 5 days a week at 8 hours per day. If you cannot manage your time reasonably within this period, consider doing some research into that. If you can and yet your employers expect more time, then you're probably being exploited. Either way this is not normal.