Let's face it, increasing your employer's profit margin will only benefit the employees if the company is struggling and they were about to be laid off because costs were starting to eat into the margins. The only case where it does is with a bonus or with workers owning shares with dividends. "keeping it alive and successful" only matters if that wouldn't have happened otherwise and even then not much if you have good job mobility.

No need to allocate. Something like "our clever engineers managed to save us $2M per year, so we're giving everyone a $500 bonus this month" seams entirely reasonable.