This is the the 2018 Korean TV drama series. Its Korean name is "나의 아저씨," literally "My Ahjusshi."

From MyDramaList: https://mydramalist.com/25172-my-ajusshi
"Park Dong-hun is a middle-aged engineer who is married to attorney Kang Yun-hui. However, his life is not that happy as he has two unemployed brothers, Sang-hun and Gi-hun, who rely on him. Moreover, his wife is secretly having an affair with CEO Do Jun-yeong, his current boss and college junior. Receiving an unexpected bribe one day, Dong-hun notices that his co-worker Lee Ji-ahn witnessed the incident. Ji-ahn is a young part-time worker at Dong-hun's company who is drowning in debt and left alone to take care of her ill grandmother. Dong-hun then gets entangled in his brothers' struggle to get back on their feet and the company's internal rivalry between the company's CEO and the people opposing him. All the while, unaware that CEO Jun-yeong wants to get rid of him with Ji-ahn's help."

Wikipedia: https://en.wikipedia.org/wiki/My_Mister
IMDB: https://www.imdb.com/title/tt7923710
AsianWiki: https://asianwiki.com/My_Mister

This is the complete set of 16 episodes, each one being about 1:20 long. They all have edited "soft" English captions; that is, English subtitles are part of the MKV file and the subtitles can be enabled or disabled as you wish.

I downloaded the source MKV files and extracted Netflix' subtitles from those. Then I...
- Used Subtitle Edit (by Nikolaj Lynge Olsson) to find and fix all flagged issues
- Added 0.7 second to each subtitle (where possible) to allow more time to read them
- Edited episode 12 for a brief English profanity at the 7:13 mark
- "Softened" all subtitled profanity (bastard --> jerk, damn --> darn, bitch --> wench etc.)
- Corrected commonly-found typos, also converting many word pairs into their common English contractions
- Watched the series and made additional corrections, also italicizing music lyrics, characters' thoughts, flashbacks, and some off-screen dialogue
- Used Handbrake to create new MKV files, adding my subtitles as soft captions

Format: MKV
Format info: Audio Video Interleave
Total file sizes: 24.3 GB (26,105 MB)
Total duration: 21 hours, 13 minutes, 32 seconds
Overall bitrate: 2728 Kbps

Video format: MPEG-4
Video Codec: H264 - MPEG-4 AVC (part 10) (avc1)
Video bitrate: 2600 Kbps (2-pass)
Video width: 1920 pixels
Video height: 1036 pixels
Video frame rate: 23.976 fps
Video decoded format: Planar 4:2:0 YUV
Video scan type: Progressive

Audio format: MPEG AAC Audio (mp4a)
Audio language: Korean
Audio bitrate mode: Constant
Audio bitrate: 128 Kbps
Audio channel(s): 2
Audio sampling rate: 48 KHz 

Subtitles:  English as soft captions - feel free to rip & use or distribute as you wish