Is it illegal to not have paychecks in envelopes?

In many jurisdictions, it is not illegal to issue paychecks without envelopes, as long as employees receive their wages in a timely manner and the payment method complies with labor laws. However, employers must ensure that pay stubs or wage statements are provided, detailing earnings and deductions, where required by law. It's advisable for employers to check local labor regulations to ensure compliance.