What would you do if your soldier was two hours late to work call, with a previous no show to PT formation (corrective action, UCMJ, etc.)?

I find this excuse not very compelling. More likely he wanted to get just one more session in.
Now I don't get in SPC Tentpeg's ass for having a social life.
However, this is affecting work performance and that is a no go.
I think SPC Tentpeg just found his social life greatly constricted, to the tune of 14 days restriction.
Depending on how that goes and his willingness to get his head right, more may ensue.
The goal should be to correct the behavior, not necessarily punish the Soldier.
Punishment comes when he is so foolish as to back talk or worse, break restriction. Then I will regulate.

Sergeant, I would take away Snuffy's pass privilege, give them a counseling statement with the corrective action of showing up every 15 minutes in a different uniform. I.e. ACU first go round, Winter PT uniform, Class B uniform, then the field uniform with body armor, and so on. Be creative, we have numerous uniforms to go through. All of this is corrective training, not punishment. Keep it going to about 23:45 on night when you have staff duty/CQ. I think Snuffy will get the message.

i knew an NCO who used to solve this problem as follows: tell him he can either show up to work 1-2 hours early for the next 14 duty days and scrub the shitters or he can get paperwork, his choice. you might have to show up early too to verify he's actually there, but you could always use your time for some admin work. it'll teach him to show up on time, assuming he's otherwise a good troop. if he is a good troop, it'll be worthwhile to teach the lesson at the lowest possible level.

Always a case by case...but cannot be ignored. What actions were taken the previous incidents?

SSG(P) (Join to see) death penalty is a bit too hard, but definitely making their life a living hell for a bit definitely is in the ballpark. Take away weekend passes and any liberties. HOWEVER, before you do anything counsel them on paper so you have a paper trail so if they mess up again they lose a rank (at CDR's discretion of course) and maybe start taking pay as well to spend a message.

If this was a Navy person and I had the authority id do a counseling chit with some EMI (Extra Military Instruction) Id have them Muster with the Color Guard in the Morning and the Evening and suspend their off post privileges for two weekends plus the interim week (9 days). I would also have already assigned them to LEAD PT with the CFL's. While mistakes happen they were out past curfew, and they were two hours late. This would be Strike two on the late thing and if their was a third incident I would sent them to Mast. No matter what you end up doing you need to Document, Document, Document. ... Some times they just need that Ahh ha moment that this wont be tolerated and they need to get it together.

Just my two cents.

SSG(P) (Join to see)
What MSG Brad Sand said. What actions were taken for his previous No Show?

Counseling with corrective action with the understanding that if this happens again, then UCMJ will be recommended to the Command Team.

When I was at FT Irwin, in my platoon anyone that was late to formation, they were given the corrective action that they and their immediate supervisor were to be at the flag pole @ 0600 for the cannon and raising of the flag. This was to take place for an entire week. If it happened again, UCMJ was given.

If the Soldier already had a previous no show then he/she should already be conducting corrective training. How far apart were the infractions? If they were back to back and you did your DA 4586 with corrective training and it was not assessed yet due to time than I would recommend UCMJ at the company level. What was the Soldiers corrective training for the previous no show? These are all questions that I would need to assist.

Lol,you would have got office hours, shit duty out the ass, probably restrictions. Do it twice you’d lose rank and pay, after that you’d be processed out and stuck with shitty discharge of some type.