This Tweet is a great example of how out-of- touch our politicians can be.
To put it simply, profits go up, profits go down or sometimes disappear. The economy and business conditions change, competition changes. There are no guarantees.
When a union contract is negotiated for wage increases, benefit increases, more time off, work rules, etc. they are intended to be permanent and in some cases they compound over time. Wage increases and employer benefit contributions are good examples.
A wage increase of a dollar is not a dollar to the employer. Add to that amount Social Security and other payroll taxes, add wage based benefits, perhaps a 401k match or in a few cases pension funding.
As labor costs increase, including non-productive time paid, the risk grows. Just look at the auto industry as a prime example.