Is it permissible for a company not to pay the salary due for the month of March, using the coronavirus crisis as a pretext? And is this considered a debt upon it that does not lapse due to insolvency? What are the rights of the employee, Islamically, during times of crises and disasters?

The relationship between an employee and their company, and the rights of each, are determined by the contract concluded between them.

The questioner is a private employee in this company, meaning "one who works for a single entity for a temporary period," or "one whose benefit is stipulated for a specific duration."

If the employee's rights are established and due, they do not lapse. If the employer defaults on them, they are treated as bankrupt or insolvent.

Therefore, the March salary is an established right owed by the company that must be paid in full, even if the company faces difficulties thereafter.

Crises and disasters do not negate established rights owed, but they may justify terminating the employment contract before its term ends, or altering the contract's clauses by mutual agreement of both parties.