Wow! I really liked it. It really recreates the feeling of working in a busy office and dealing with constant distractions! I also really like that you had time to add a tutorial screen, something that my game could have used. I also really like the odd phishing ad or a computer reboot to spice things up!
Some things I would change are: make the player unable to restart the computer while the guy is on coffe break. Make the other character on screen a silhouete or something because at the start I was confused of what character I am. Try to shrink the game's file size, because a 40MB download for a rather simple game is a big turn off for a lot of people. Also the music in the game over screen is a tad too load. Honestly it spooked my a bit when I lost haha.
Anyway good job. Definitely an interesting and fun game! Good job!