Abolish the overtime exemption for computer systems analysts, computer programmers, and software engineers. Make it unprofitable to extract labor until someone dies. All other actions are impotent.
Not to mention that even if timesheets were used, they provide no guarantees. We always had to get management permission to put overtime in, but no one really knew how much time we worked - especially with a possibility of remote work.
This can only be fixed by pervasive monitoring, and IMHO this leads to a very unpleasant workspace.
Companies love timesheets because, even though you're salary, they want to know what you're doing at all times.
They want all the control of an hourly paid employee, with all the money stealing of a salary position.
Also you're already being tracked, they already know exactly how long you're online. I don't know what to tell you.