When is it "ok" for soldiers to deblouse while in garrison?

Serving in Hawaii for 3yrs in MI we always de-bloused whenever there was moderate work to be done. If they were moving 1 MI system no, but if they were moving 5-6 MI systems then yes. Conducting Mopo pmcs no, conducting a CoC inventory yes. Setting up MI systems inside a tent no, laying out a tent for inventories yes.

Really anything that would be a sustained physical activity for more than 10mins we de-bloused. Everyone was the same as well.

AS Top said, common sense should rule, but all my time in the Sinai desert was blouse on, sleeves down to protect from UV. Local Bedouins always wore traditional garb. (LONG/loose) Temps were regularly 110 degrees plus during the day. Overdrink system in place on water. No heat injuries during my two deployments over there.

During work details where the conditions such as Wetbulb and common sense should dictate un-blousing and top removals. Its all about dicipline and suck factor. I was a 1SG also and pickett pounding, digging fighting positions, thousands of sand bags, concertina wire, crew serve emplacements, camo, and all the other priorities of work takes dicipline people. It never ends. Garrison is one thing. Tactical situations another. So if troops dont care, the leaders are failing. The worst thing that a leader should see is troops who dont care. The defeated soldier is a leadership issue and should be corrected ASAP using UCMJ for the leader. Get off your lazy asses NCOs. Do your jobs and take care of your most valuable asset. The NCO provides Purpose, Direction and Motivation. Stop worring about dumb stuff and train. "Winning isn't everything. Winning is the only thing" stop bitching and be all you can be in our beloved Army. And I promise you that most troops who follow these simple rules will be successful. God bless our Army!!

Heat primarily

De blouse ? For the females , on the job/training ... never .. unless in the barracks in their assigned rooms for the night and showers, etc.
For the men likewise ,,
For both genders in any case ,, at least have the upper undergarments ,, in emergencies/emergency only .. like t-shirts ,, etc ..
Yes'm ,, yes'r it's mighty hot/warm in the late spring ,, all summer ,, and into most of the fall/autumn .. yep ,, we like comfort but we should also be concerned/conscious of our surroundings ,, as such .. there should be regulations and rules for such .. think about that ,, everyone .. seriously !!

That decision you be placed on the CDR’s shoulders. Working under such challenging conditions, Ft Bliss gets hella hot being the CDR I would definitely allow my Soldiers to remove their blouses being sure to also observe and enforce the “work/rest” formula. Soldiers must always be first. Ensuring you place your Soldiers first promotes higher motivation, respect towards their leadership, your Soldiers looking out for their leadership when the leadership is not around. Having a Combat Medic background, 82nd ABN, AIRBORNE ALL THE WAY!! Making sure small actions are taken when Soldiers work outside for extended periods of time (an hour or more) will go a long way to ensuring your Soldiers stay healthy physically, mentally, and emotionally speaking. In a hot environment ensure these actions are observed/enforced:
1. Full camelbak part of daily uniform, constantly drinking water, avoiding dehydration
2. Issue MREs, replenishing nutrients lost, helping to avoid dehydration
3. Remove blouse
4. Remove PC, but keep in mind that the PC offers protection from sun’s rays
5. Enforce Sun block usage.
6. Ensure Work/Rest formula is enforced
7. Allow Soldiers to rest in shaded area, no shade take camo netting to AO
8. Ensure PPE is worn, sunglasses, gloves, Dog Tags (especially if they have a red tag, allergies)
9. Do what it takes to keep moral high, provide chilled Gatorade, call the “Gut Truck” to your AO, ice cream is always a crowd pleaser
10. Consider daily early release even if Mission is under time constraints
CDRs (I was a CDR) should order and enforce measures that protect our Soldiers even if the 1SG disagrees.
SOLDIERS FIRST MISSION ALWAYS!!

We were reserve drill Sargents back in the late 80’s doing our 2 weeks at Ft. Jackson South Carolina, it was summer time early August cat 4 temp in the 90’s and humidity was about 90 as well, when it got that hot we were allowed to un- blouse your boots, but they still had to be rolled up outside the boot to allow for air flow we were not allowed to take off our shirt s we were also on a modified work schedule 20 minutes work then 20 minutes break drinking canteen water.

In Vietnam it was 107 degrees one day. Locals always wore loose long sleeve tops/shirts to keep the sun off their skin...

……….why not make a decision and own it? If Joe is working outside for an extended amount of time and it’s hot, the common sense radar would go off in my head to downgrade. Some things don’t need to be deeply investigated. Just my .02 cents.

https://adminpubs.tradoc.army.mil/regulations/TR350-29.pdf

So I'm old school, I too like to see the regs. This is the TRADOC doctrine specifically for the mitigation of heat and cold casualties.

"(4) Ensure Soldiers' clothing and equipment is present and serviceable prior to the training
day; recommend modifications of the uniform to senior leadership, based on local conditions."

As a senior leader, prevention of heat or cold injuries falls on the NCOs, who make the recommendations to the commander or his representative. At the company level modification of the uniform can be taken into account for local conditions.
However, understand that while long sleeves are potentially uncomfortable, they also provide protection from the sun in those same environments. So that should also be taken into consideration.

Unblousing boots, uncuffing the wrists, wear of sun covers (Boonie hats), and removal of IOTV or other gear during training, or work cycle should be considered. Adequate shade, work-rest cycles, and water intake, all of these things are covered in the policy. As well as the method for determining the wet-bulb which is used to create the "Heat Category" (Green, Amber, Red, Black)

As for other modifications to AR 670-1, https://www.army.mil/article/175866/army_issues_new_guidance_on_rolling_cuffing_sleeves
is an older article that points to current regulations for sleeve rolling. Also determined at the company level, particularly in the desert bases of the southern United States.

Common sense should be exercised in all things Army.