How to say red envelopes to employees?

The red envelopes for encouraging employees are as follows:

1. Thank you for your unremitting efforts in your work. Now we sincerely invite you to participate in our red envelope activities and provide you with a small reward.

I am very grateful to all my colleagues for their efforts for the company, and specially prepared a red envelope to express their gratitude.

Usually, everyone is working hard and making a lot of contributions. Now that the red envelopes are in place, we encourage everyone to continue their efforts.