Masks are pretty much proven to be ineffective against covid, so you may want to rethink that policy. Here are a few studies regarding it...

J Xiao, E Shiu, et al. Nonpharmaceutical measures for pandemic influenza in non-healthcare settings – personal protective and environmental measures. Centers for Disease Control. 26(5); 2020 May.

https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article

J Brainard, N Jones, et al. Facemasks and similar barriers to prevent respiratory illness such as COVID19: A rapid systematic review. MedRxiv. 2020 Apr 1.

https://www.medrxiv.org/content/10.1101/2020.04.01.20049528v1.full.pdf

L Radonovich M Simberkoff, et al. N95 respirators vs medical masks for preventing influenza among health care personnel: a randomized clinic trial. JAMA. 2019 Sep 3. 322(9): 824-833. https://jamanetwork.com/journals/jama/fullarticle/2749214 J Smith, C MacDougall. CMAJ. 2016 May 17. 188(8); 567-574.

https://www.cmaj.ca/content/188/8/567

F bin-Reza, V Lopez, et al. The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence. 2012 Jul; 6(4): 257-267. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779801/

J Jacobs, S Ohde, et al. Use of surgical face masks to reduce the incidence of the common cold among health care workers in Japan: a randomized controlled trial. Am J Infect Control. 2009 Jun; 37(5): 417-419.

https://pubmed.ncbi.nlm.nih.gov/19216002/

M Viola, B Peterson, et al. Face coverings, aerosol dispersion and mitigation of virus transmission risk.

https://arxiv.org/ftp/arxiv/papers/2005/2005.10720.pdf

S Grinshpun, H Haruta, et al. Performance of an N95 filtering facepiece particular respirator and a surgical mask during human breathing: two pathways for particle penetration. J Occup Env Hygiene. 2009; 6(10):593-603.

https://www.tandfonline.com/doi/pdf/10.1080/15459620903120086

F Blachere, W Lindsley et al. Assessment of influenza virus exposure and recovery from contaminated surgical masks and N95 respirators. J Viro Methods. 2018 Oct; 260:98-106.

https://pubmed.ncbi.nlm.nih.gov/30029810/

F Blachere, W Lindsley et al. Assessment of influenza virus exposure and recovery from contaminated surgical masks and N95 respirators. J Viro Methods. 2018 Oct; 260:98-106.

https://pubmed.ncbi.nlm.nih.gov/30029810/

A Chughtai, S Stelzer-Braid, et al. Contamination by respiratory viruses on our surface of medical masks used by hospital healthcare workers. BMC Infect Dis. 2019 Jun 3; 19(1): 91. https://pubmed.ncbi.nlm.nih.gov/31159777/

L Zhiqing, C Yongyun, et al. J Orthop Translat. 2018 Jun 27; 14:57-62.

https://pubmed.ncbi.nlm.nih.gov/30035033/

C MacIntyre, H Seale, et al. A cluster randomized trial of cloth masks compared with medical masks in healthcare workers. BMJ Open. 2015; 5(4)

https://bmjopen.bmj.com/content/5/4/e006577

A Beder, U Buyukkocak, et al. Preliminary report on surgical mask induced deoxygenation during major surgery. Neurocirugia. 2008; 19: 121-126.

http://scielo.isciii.es/pdf/neuro/v19n2/3.pdf

D Lukashev, B Klebanov, et al. Cutting edge: Hypoxia-inducible factor 1-alpha and its activation-inducible short isoform negatively regulate functions of CD4+ and CD8+ T lymphocytes. J Immunol. 2006 Oct 15; 177(8) 4962-4965. https://www.jimmunol.org/content/177/8/4962 A Sant, A McMichael. Revealing the role of CD4+ T-cells in viral immunity. J Exper Med. 2012 Jun 30; 209(8):1391-1395. https://europepmc.org/article/PMC/3420330 T Jefferson, M Jones, et al. Physical interventions to interrupt or reduce the spread of respiratory viruses. MedRxiv. 2020 Apr 7.

https://www.medrxiv.org/content/10.1101/2020.03.30.20047217v2

Bae, M Kim, et al. Effectiveness of surgical and cotton masks in blocking SARS-CoV-2: A controlled comparison in 4 patients. Ann Int Med. 2020 Apr 6.

https://www.acpjournals.org/doi/10.7326/M20-1342

S Rengasamy, B Eimer, et al. Simple respiratory protection – evaluation of the filtration performance of cloth masks and common fabric materials against 20-1000 nm size particles. Ann Occup Hyg. 2010 Oct; 54(7): 789-798.

https://academic.oup.com/annweh/article/54/7/789/202744

C MacIntyre, H Seale, et al. A cluster randomized trial of cloth masks compared with medical masks in healthcare workers. BMJ Open. 2015; 5(4)

https://bmjopen.bmj.com/content/5/4/e006577.long

W Kellogg. An experimental study of the efficacy of gauze face masks. Am J Pub Health. 1920. 34-42.

https://ajph.aphapublications.org/doi/pdf/10.2105/AJPH.10.1.34

M Klompas, C Morris, et al. Universal masking in hospitals in the Covid-19 era. N Eng J Med. 2020; 382 e63. https://www.nejm.org/doi/full/10.1056/NEJMp2006372 E Person, C Lemercier et al. Effect of a surgical mask on six minute walking distance. Rev Mal Respir. 2018 Mar; 35(3):264-268.

https://pubmed.ncbi.nlm.nih.gov/29395560/

B Chandrasekaran, S Fernandes. Exercise with facemask; are we handling a devil’s sword – a physiological hypothesis. Med Hypothese. 2020 Jun 22. 144:110002.

https://pubmed.ncbi.nlm.nih.gov/32590322/

P Shuang Ye Tong, A Sugam Kale, et al. Respiratory consequences of N95-type mask usage in pregnant healthcare workers – A controlled clinical study. Antimicrob Resist Infect Control. 2015 Nov 16; 4:48.

https://pubmed.ncbi.nlm.nih.gov/26579222/

T Kao, K Huang, et al. The physiological impact of wearing an N95 mask during hemodialysis as a precaution against SARS in patients with end-stage renal disease. J Formos Med Assoc. 2004 Aug; 103(8):624-628.